Knowledge

Longcomb sawfish

Source πŸ“

302: 392:(in front of in largetooth sawfish and roughly above in smalltooth sawfish) and it has a very small or no lower tail lobe (present in knifetooth and largetooth sawfish). It can be further separated from the two most similar species, the dwarf and smalltooth sawfish, by the considerably smaller maximum size of the former species, and the less greenish colour (when alive/recently dead) and essentially Atlantic distribution of the latter species. The smalltooth and longcomb sawfish might historically have come into contact in South Africa, but sawfish appear to have been 380:), the teeth towards the tip of the rostrum are clearly closer to each other than those at its base (unlike the dwarf, smalltooth and largetooth sawfish where either equally spaced or only marginally closer to each other towards the tip of the rostrum), a relatively narrow rostrum, width equalling 9–17% of its length (typically wider in dwarf and largetooth sawfish), a rostrum that is 23–33% of the total length of the fish (20–25% in dwarf sawfish), relatively short 112: 498: 70: 51: 405: 42: 601:
gas extraction. These developments introduce structures like lighted jetties, dredged shipping channels, and offloading structures, potentially hindering the movement of juvenile longcomb sawfish along the coastline. The increased prevalence of these structures may lead to population fragmentation or the destruction of vital juvenile habitats for the species.
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and lines are utilized, with the distinctive toothed rostra of sawfish making them particularly vulnerable to entanglement, especially in gillnets and trawls. Over recent decades, fishing effort has escalated across the species' range, driven by escalating demand and exploitation in the fin and meat trade.
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The longcomb sawfish faces significant threats attributed to intense and poorly managed fishing pressure throughout its range. This pressure arises from both commercial and small-scale fisheries, including artisanal, cultural, and subsistence practices. Various fishing gears such as gillnets, trawls,
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Critical habitats of the longcomb sawfish, including inshore freshwater, estuarine, mangrove, and coastal areas, are under threat due to habitat loss and degradation. The reduction of mangrove areas in Southeast Asia, for instance, is estimated to be around 30% since 1980. The most affected habitats
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and the meat is eaten. Fishing is the main threat, but it is also threatened by habitat loss. Because of the potential threat they (or rather their "saw") represent to humans, they are sometimes killed before being brought onto the boat when accidentally caught. Because of the "saw", all sawfish are
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coast and in estuaries in the first part of their lives. Sexual maturity is reached at an age of about 9 years, and a length of 3.4–3.8 m (11–12 ft). The maximum age is unknown, but it might be in excess of 50 years, and an individual caught as a juvenile lived for 35 years at an aquarium.
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Historically, the northwest region of Australia provided relatively undisturbed coastal habitats for the longcomb sawfish. Presently, various factors pose substantial threats to the species in Western Australia, including coastal developments such as mining, natural resource operations, and oil and
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The longcomb sawfish encounters high fishing pressure, resulting in poorly regulated and unmanaged exploitation. Bycatch in both commercial and small-scale fisheries, driven by escalating demand for fins and meat, poses a considerable threat. The species is frequently retained for these valuable
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and the young are 60–108 cm (24–43 in) long at birth. It is often said that there are about 12 young in each litter, but the basis for this number is unclear (in other sawfish species litter size ranges from 1 to 20). The females give birth in inshore areas, and the young stay near the
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from 2 and possibly extirpated from another 24, leaving only 11 countries where it certainly still survives. In terms of area this means that it certainly survives in only 62% of its historical range. The total population is believed to have declined by more than 80% over three generations. The
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habitats, even in very shallow waters, but can also occur far offshore to a depth of more than 70 m (230 ft). There are records from rivers far inland, but it is not frequent in freshwater. It is mainly found in places with a bottom consisting of sand, mud or silt.
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are those crucial for nearshore and estuarine nursery activities. Additionally, potential impacts on adult longcomb sawfish associated with offshore oil and gas extraction, including activities like seismic surveys, further compound habitat threats in various regions.
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on the eastern coast. Today it has disappeared from much of its historical range. It can live in colder waters than its relatives, as also evidenced by the range in Australia where it occurs further south than the other species of sawfish.
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parts, contributing to population decline. In some regions, measures such as the release of sawfishes by fishers may still lead to significant at-vessel and post-capture mortality, further impacting population viability.
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The longcomb sawfish is possibly the largest species of sawfish, reaching a total length of up to 7.3 m (24 ft), but rarely more than 6 m (20 ft) today. Its upperparts are greenish-brown to
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Harry, A.V.; Everett, B.; Faria, V.; Fordham, S.; Grant, M.I.; Haque, A.B.; Ho, H.; Jabado, R.W.; Jones, G.C.A.; Lear, K.O.; Morgan, D.L.; Philips, N.M.; Spaet, J.L.Y.; Tanna, A.; Wueringer, B.E. (2022).
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listing 13 individuals (7 males, 6 females) in North America in 2014, 6 individuals (3 males, 3 females) in Europe in 2013, and 2 individuals in Japan in 2017.
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A combination of characters are necessary to distinguish it from the other sawfish species: the longcomb sawfish has teeth to near the base of the
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Wueringer, B.E.; L. Squire Jr. & S.P. Collin (2009). "The biology of extinct and extant sawfish (Batoidea: Sclerorhynchidae and Pristidae)".
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subpopulations in Australia are among the few that remain viable, but even they have declined, and the species no longer occurs in
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Sawfish occasionally lose teeth during their life and these are not replaced. Correct tooth count refers to actual teeth and
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Phillips, N. & Wueringer, B. (Autumn 2015). "Sawfish. Ancient predators in need of modern conservation tools".
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The rostrum or "saw" of a longcomb sawfish (each red or black section on ruler is 10 cm or 3.9 in)
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Slaughter, Bob H.; Springer, Stewart (1968). "Replacement of Rostral Teeth in Sawfishes and Sawsharks".
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White, S. & K. Duke (2017). Smith; Warmolts; Thoney; Hueter; Murray & Ezcurra (eds.).
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Longcomb sawfish have few natural enemies, but can fall prey to large sharks and crocodiles.
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Historically the longcomb sawfish has been recorded in 37 countries, but it has been
529:) and saw (as novelty items) are highly valuable, while some parts are used in Asian 485: 357: 338: 79: 1152: 1346: 1033: 612: 429: 421: 381: 322: 1144: 1359: 1538: 1416: 1287: 417: 282: 50: 1083:
Dulvy; Davidson; Kyne; Simpfendorfer; Harrison; Carlson & Fordham (2014).
1025: 608: 551: 470: 445: 404: 389: 385: 330: 326: 1382: 1278: 1223: 321:; bottom). Notice especially the teeth on the saw, the shape of the tail and 17: 457: 441: 278: 123: 41: 1085:"Ghosts of the coast: global extinction risk and conservation of sawfishes" 752: 1499: 1390: 1272: 789: 577: 453: 173: 143: 1369: 505: 1408: 1395: 990: 547: 474: 425: 271: 203: 193: 1421: 384:(unlike the knifetooth and largetooth sawfish), a leading edge of the 1315: 1173:. Special Publication of the Ohio Biological Survey. pp. 75–85. 1104: 133: 1249: 982: 513:
The longcomb sawfish has declined drastically and is listed by the
1533: 878:"Pristis zijsron β€” Green Sawfish, Dindagubba, Narrowsnout Sawfish" 831: 555: 504: 496: 403: 300: 96: 90: 1512: 948:(3rd ed.). Johns Hopkins University Press. pp. 44–45. 514: 1253: 1119:
Everett; Cliff; Dudley; Wintner & van der Elst (2015).
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particularly prone to becoming entangled in fishing nets.
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The longcomb sawfish is mainly found in coastal marine,
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Marine Fishes of Tropical Australia and South East Asia
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that is located clearly behind the leading edge of the
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In Australia, it ranged from 1250: 68: 49: 40: 31: 1103: 729: 882:Department of the Environment and Energy 912: 910: 908: 906: 904: 902: 900: 898: 700: 698: 696: 694: 692: 690: 688: 686: 662: 638: 566:, which restricts international trade. 1648:Critically endangered fauna of Oceania 1196: 1186: 876:Department of the Environment (2017). 684: 682: 680: 678: 676: 674: 672: 670: 668: 666: 1638:Critically endangered fauna of Africa 1092:Aquatic Conserv: Mar. Freshw. Ecosyst 7: 1658:Critically endangered fauna of China 469:The longcomb sawfish feeds on fish, 341:, while the underparts are whitish. 1643:Critically endangered fauna of Asia 925:. Florida Museum of Natural History 717:IUCN Red List of Threatened Species 649:("tooth sockets") from lost teeth. 420:waters in the western and central 408:A pair of longcomb sawfish at the 25: 1125:African Journal of Marine Science 1049:"Pristis zijsron (Bleeker, 1851)" 611: 110: 1051:. Sawfish Conservation Society 1047:Whitty, J. & N. Phillips. 554:, India, Indonesia, Malaysia, 523:Red List of Threatened Species 1: 1145:10.2989/1814232X.2015.1027269 27:Species of cartilaginous fish 1674: 1633:Critically endangered fish 572:Small numbers are kept in 325:, and the position of the 1026:10.1007/s11160-009-9112-7 232: 225: 107:Scientific classification 105: 88: 66: 57: 48: 39: 34: 1623:Fish of Papua New Guinea 793:. November 2017 version. 779:; Pauly, Daniel (eds.). 400:Distribution and habitat 281:, found in tropical and 1006:Rev Fish Biol Fisheries 480:Little is known of its 465:Behavior and life cycle 1653:Fish described in 1851 1618:Fish of Southeast Asia 1171:Husbandry of sawfishes 510: 502: 413: 354:Anoxypristis cuspidata 333: 319:Anoxypristis cuspidata 1603:Marine fish of Africa 724:: e.T39393A58304631. 519:Critically Endangered 508: 500: 407: 348:or "saw" (unlike the 304: 291:critically endangered 75:Critically Endangered 753:"Appendices | CITES" 560:United Arab Emirates 531:traditional medicine 1608:Marine fish of Asia 1598:Fish of the Red Sea 1137:2015AfJMS..37..275E 1018:2009RFBF...19..445W 396:from this country. 258:narrowsnout sawfish 60:Conservation status 1628:Ovoviviparous fish 1613:Fish of South Asia 1245:(Longcomb sawfish) 1216:Wildlife Australia 944:Allen, G. (1999). 834:. pp. 59–66. 511: 503: 414: 374:largetooth sawfish 366:smalltooth sawfish 350:knifetooth sawfish 334: 315:knifetooth sawfish 307:largetooth sawfish 270:) is a species of 1575: 1574: 1521:Open Tree of Life 1256:Taxon identifiers 1180:978-0-86727-166-9 828:Rays of the World 410:Aquarium of Genoa 287:Indo-West Pacific 250: 249: 184:Rhinopristiformes 100: 83: 35:Longcomb sawfish 16:(Redirected from 1665: 1568: 1567: 1555: 1554: 1542: 1541: 1529: 1528: 1516: 1515: 1503: 1502: 1490: 1489: 1477: 1476: 1464: 1463: 1451: 1450: 1438: 1437: 1425: 1424: 1412: 1411: 1399: 1398: 1386: 1385: 1373: 1372: 1363: 1362: 1350: 1349: 1337: 1336: 1324: 1323: 1311: 1310: 1298: 1297: 1296: 1283: 1282: 1281: 1251: 1228: 1227: 1211: 1205: 1204: 1198: 1194: 1192: 1184: 1166: 1157: 1156: 1116: 1110: 1109: 1107: 1105:10.1002/aqc.2525 1089: 1080: 1061: 1060: 1058: 1056: 1044: 1038: 1037: 1001: 995: 994: 966: 960: 959: 941: 935: 934: 932: 930: 914: 893: 892: 890: 888: 873: 846: 845: 820: 795: 794: 773: 767: 766: 764: 763: 749: 743: 742: 740: 738: 733: 702: 650: 643: 621: 616: 615: 574:public aquariums 564:CITES Appendix I 525:. The fins (for 329:compared to the 254:longcomb sawfish 238: 115: 114: 94: 77: 72: 71: 53: 44: 32: 21: 1673: 1672: 1668: 1667: 1666: 1664: 1663: 1662: 1578: 1577: 1576: 1571: 1563: 1558: 1550: 1545: 1537: 1532: 1524: 1519: 1511: 1506: 1498: 1495:Observation.org 1493: 1485: 1480: 1472: 1467: 1459: 1454: 1446: 1441: 1433: 1428: 1420: 1415: 1407: 1402: 1394: 1389: 1381: 1376: 1368: 1366: 1360:pristis-zijsron 1358: 1353: 1345: 1340: 1332: 1327: 1321:pristis-zijsron 1319: 1314: 1308:Pristis_zijsron 1306: 1301: 1294:Pristis zijsron 1292: 1291: 1286: 1277: 1276: 1271: 1264:Pristis zijsron 1258: 1243:Pristis zijsron 1237: 1232: 1231: 1213: 1212: 1208: 1195: 1185: 1181: 1168: 1167: 1160: 1118: 1117: 1113: 1087: 1082: 1081: 1064: 1054: 1052: 1046: 1045: 1041: 1003: 1002: 998: 983:10.2307/1442018 968: 967: 963: 956: 943: 942: 938: 928: 926: 919:"Green sawfish" 916: 915: 896: 886: 884: 875: 874: 849: 842: 822: 821: 798: 783:Pristis zijsron 775: 774: 770: 761: 759: 751: 750: 746: 736: 734: 710:Pristis zijsron 704: 703: 664: 659: 654: 653: 644: 640: 635: 627:Threatened rays 617: 610: 607: 586: 544:New South Wales 495: 467: 434:South China Sea 402: 372:, and 14–24 in 299: 267:Pristis zijsron 246: 240: 236:Pristis zijsron 234: 221: 218:P. zijsron 109: 101: 84: 73: 69: 62: 28: 23: 22: 15: 12: 11: 5: 1671: 1669: 1661: 1660: 1655: 1650: 1645: 1640: 1635: 1630: 1625: 1620: 1615: 1610: 1605: 1600: 1595: 1590: 1580: 1579: 1573: 1572: 1570: 1569: 1556: 1543: 1530: 1517: 1504: 1491: 1478: 1465: 1452: 1439: 1426: 1413: 1400: 1387: 1374: 1364: 1351: 1338: 1325: 1312: 1299: 1284: 1268: 1266: 1260: 1259: 1254: 1248: 1247: 1236: 1235:External links 1233: 1230: 1229: 1206: 1179: 1158: 1131:(2): 275–284. 1111: 1098:(1): 134–153. 1062: 1039: 1012:(4): 445–464. 996: 977:(3): 499–506. 961: 954: 936: 894: 847: 840: 796: 777:Froese, Rainer 768: 744: 661: 660: 658: 655: 652: 651: 637: 636: 634: 631: 630: 629: 623: 622: 606: 603: 585: 582: 527:shark fin soup 494: 491: 466: 463: 438:Southeast Asia 432:, east to the 401: 398: 298: 295: 285:waters of the 248: 247: 241: 230: 229: 223: 222: 215: 213: 209: 208: 201: 197: 196: 191: 187: 186: 181: 177: 176: 171: 167: 166: 164:Elasmobranchii 161: 157: 156: 154:Chondrichthyes 151: 147: 146: 141: 137: 136: 131: 127: 126: 121: 117: 116: 103: 102: 89: 86: 85: 67: 64: 63: 58: 55: 54: 46: 45: 37: 36: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1670: 1659: 1656: 1654: 1651: 1649: 1646: 1644: 1641: 1639: 1636: 1634: 1631: 1629: 1626: 1624: 1621: 1619: 1616: 1614: 1611: 1609: 1606: 1604: 1601: 1599: 1596: 1594: 1591: 1589: 1586: 1585: 1583: 1566: 1561: 1557: 1553: 1548: 1544: 1540: 1535: 1531: 1527: 1522: 1518: 1514: 1509: 1505: 1501: 1496: 1492: 1488: 1487:green-sawfish 1483: 1479: 1475: 1470: 1466: 1462: 1457: 1453: 1449: 1444: 1440: 1436: 1431: 1427: 1423: 1418: 1414: 1410: 1405: 1401: 1397: 1392: 1388: 1384: 1379: 1375: 1371: 1365: 1361: 1356: 1352: 1348: 1343: 1339: 1335: 1330: 1326: 1322: 1317: 1313: 1309: 1304: 1300: 1295: 1289: 1285: 1280: 1274: 1270: 1269: 1267: 1265: 1261: 1257: 1252: 1246: 1244: 1239: 1238: 1234: 1225: 1221: 1217: 1210: 1207: 1202: 1190: 1182: 1176: 1172: 1165: 1163: 1159: 1154: 1150: 1146: 1142: 1138: 1134: 1130: 1126: 1122: 1115: 1112: 1106: 1101: 1097: 1093: 1086: 1079: 1077: 1075: 1073: 1071: 1069: 1067: 1063: 1050: 1043: 1040: 1035: 1031: 1027: 1023: 1019: 1015: 1011: 1007: 1000: 997: 992: 988: 984: 980: 976: 972: 965: 962: 957: 955:0-7309-8363-3 951: 947: 940: 937: 924: 920: 913: 911: 909: 907: 905: 903: 901: 899: 895: 883: 879: 872: 870: 868: 866: 864: 862: 860: 858: 856: 854: 852: 848: 843: 841:9780643109148 837: 833: 829: 825: 819: 817: 815: 813: 811: 809: 807: 805: 803: 801: 797: 792: 791: 786: 784: 778: 772: 769: 758: 754: 748: 745: 732: 727: 723: 719: 718: 713: 711: 701: 699: 697: 695: 693: 691: 689: 687: 685: 683: 681: 679: 677: 675: 673: 671: 669: 667: 663: 656: 648: 642: 639: 632: 628: 625: 624: 620: 619:Sharks portal 614: 609: 604: 602: 598: 594: 590: 583: 581: 579: 575: 570: 567: 565: 561: 557: 553: 549: 545: 540: 535: 532: 528: 524: 520: 516: 507: 499: 492: 490: 487: 486:ovoviviparous 483: 478: 476: 472: 464: 462: 459: 455: 450: 447: 443: 439: 435: 431: 427: 423: 419: 411: 406: 399: 397: 395: 391: 387: 383: 382:pectoral fins 379: 375: 371: 367: 363: 359: 358:dwarf sawfish 355: 351: 347: 342: 340: 332: 328: 324: 323:pectoral fins 320: 316: 312: 308: 303: 296: 294: 292: 288: 284: 280: 277: 273: 269: 268: 263: 262:green sawfish 259: 255: 244: 239: 237: 231: 228: 227:Binomial name 224: 220: 219: 214: 211: 210: 207: 206: 202: 199: 198: 195: 192: 189: 188: 185: 182: 179: 178: 175: 172: 169: 168: 165: 162: 159: 158: 155: 152: 149: 148: 145: 142: 139: 138: 135: 132: 129: 128: 125: 122: 119: 118: 113: 108: 104: 98: 92: 87: 81: 76: 65: 61: 56: 52: 47: 43: 38: 33: 30: 19: 18:Green sawfish 1263: 1242: 1215: 1209: 1170: 1128: 1124: 1114: 1095: 1091: 1053:. 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Retrieved 721: 715: 709: 641: 599: 595: 591: 587: 571: 568: 536: 512: 493:Conservation 484:, but it is 479: 468: 451: 430:Persian Gulf 422:Indo-Pacific 415: 377: 370:P. pectinata 369: 361: 353: 343: 335: 318: 310: 266: 265: 261: 257: 253: 251: 235: 233: 217: 216: 204: 170:Superorder: 29: 1417:iNaturalist 1288:Wikispecies 1197:|work= 1055:17 November 929:14 November 923:Ichthyology 887:14 November 471:crustaceans 418:subtropical 390:pelvic fins 364:, 20–32 in 331:pelvic fins 313:; top) and 297:Description 283:subtropical 1582:Categories 762:2022-01-14 657:References 552:Bangladesh 539:extirpated 482:life cycle 446:Jervis Bay 436:, through 394:extirpated 386:dorsal fin 378:P. pristis 362:P. clavata 327:dorsal fin 311:P. pristis 160:Subclass: 93:Appendix I 1224:0043-5481 1199:ignored ( 1189:cite book 757:cites.org 578:studbooks 521:" in its 458:estuarine 442:Shark Bay 293:species. 279:Pristidae 212:Species: 194:Pristidae 130:Kingdom: 124:Eukaryota 1534:Species+ 1435:10839202 1391:FishBase 1273:Wikidata 1153:83912626 790:FishBase 605:See also 475:molluscs 454:mangrove 190:Family: 174:Batoidea 144:Chordata 140:Phylum: 134:Animalia 120:Domain: 80:IUCN 3.1 1593:Pristis 1409:5216288 1279:Q135918 1133:Bibcode 1034:3352391 1014:Bibcode 991:1442018 647:alveoli 584:Threats 576:, with 548:Bahrain 426:Red Sea 412:, Italy 346:rostrum 274:in the 272:sawfish 243:Bleeker 205:Pristis 200:Genus: 180:Order: 150:Class: 95: ( 78: ( 1565:217375 1526:703739 1513:217375 1500:598330 1474:495877 1448:564305 1422:110382 1383:125419 1367:ECOS: 1316:ARKive 1222:  1177:  1151:  1032:  989:  971:Copeia 952:  838:  737:20 May 276:family 245:, 1851 1560:WoRMS 1552:68442 1547:SPRAT 1461:39393 1430:IRMNG 1378:EUNIS 1347:4MK37 1334:86843 1149:S2CID 1088:(PDF) 1030:S2CID 987:JSTOR 832:CSIRO 633:Notes 556:Qatar 339:olive 97:CITES 91:CITES 1539:6250 1508:OBIS 1482:NOAA 1469:NCBI 1456:IUCN 1443:ITIS 1404:GBIF 1396:7956 1370:9967 1329:BOLD 1220:ISSN 1201:help 1175:ISBN 1057:2017 975:1968 950:ISBN 931:2017 889:2017 836:ISBN 824:Last 739:2023 722:2022 517:as " 515:IUCN 473:and 456:and 428:and 252:The 1355:CMS 1342:CoL 1303:AFD 1141:doi 1100:doi 1022:doi 979:doi 726:doi 260:or 1584:: 1562:: 1549:: 1536:: 1523:: 1510:: 1497:: 1484:: 1471:: 1458:: 1445:: 1432:: 1419:: 1406:: 1393:: 1380:: 1357:: 1344:: 1331:: 1318:: 1305:: 1290:: 1275:: 1193:: 1191:}} 1187:{{ 1161:^ 1147:. 1139:. 1129:37 1127:. 1123:. 1096:26 1094:. 1090:. 1065:^ 1028:. 1020:. 1010:19 1008:. 985:. 973:. 921:. 897:^ 880:. 850:^ 830:. 799:^ 787:. 755:. 720:. 714:. 665:^ 550:, 376:, 368:, 360:, 352:, 256:, 1226:. 1203:) 1183:. 1155:. 1143:: 1135:: 1108:. 1102:: 1059:. 1036:. 1024:: 1016:: 993:. 981:: 958:. 933:. 891:. 844:. 785:" 781:" 765:. 741:. 728:: 712:" 708:" 317:( 309:( 264:( 99:) 82:) 20:)

Index

Green sawfish


Conservation status
Critically Endangered
IUCN 3.1
CITES
CITES
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Chondrichthyes
Elasmobranchii
Batoidea
Rhinopristiformes
Pristidae
Pristis
Binomial name
Bleeker
sawfish
family
Pristidae
subtropical
Indo-West Pacific
critically endangered

largetooth sawfish
knifetooth sawfish

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