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Fish classification by deepak rawal
- 1. Presentation by- Deepak Rawal Assistant Professor Mohanlal Sukhadia University Udaipur India
- 3. Superclass- Pisces General characters • Paired pectoral and pelvic fins • Respiration by gills • Heart 2 chambered • Poikilothermic • Lateral line system • Cranial nerves 10 pairs • Study of fishe- Ichthyology • Body covered with scales mostly
- 4. Class- placodermii • Bony armour/plate skinned • Jaws • Extinct class • Two order • 1 Arthrodiriformes • 2 Antiarchiformes
- 5. Order- Arthrodiriformes • Armour of head and trunk with movable joint • marine • Example - Dinichtyes
- 7. Order- Antiarchiformes • Pectoral fins long • Fresh-water • Example- pterychtyes
- 8. class-Chondrichtyes • Also called elasmobranchi • Operculum=gill cover absent • Cartilagenous endoskeleton • Heterocercal tail • Pelvic fins with clasper in male • Skin with placoid scales • Mouth on ventral side • Cones absent • Ampullae of lorenzini present • Cloaca present
- 9. . Class-Chondrichtyes Subclass-selachi Subclass-holocephli Order-squaliformes Order-rajiformes
- 10. Order-Squaliformes • Also called pleurotremata • Gill-slits lateral 5-7 pairs • Spiracle small • Example- scoliodon(dogfish)
- 11. Order-Rajiformes • Also called hypotremata • Body dorso ventrally flattened • 5 pair of gill slits ventral • Large pectoral fin • Spiracle large • Example- trygon(sting ray)
- 12. Subclass-Holocephali • No spiracle • Single gill opening on either side covered by fleshy operculum • Isocercal tail • Single nasal opening • Example- chimaera(hydrolagus)
- 13. Class-Osteichtyes • Bony endoskeleton • Gills not more than 4 pairs • operculum=gill cover present • Homocercal or diphycercal or prptocercal tail • Terminal mouth • Cloaca absent • Swim bladder present • Cycloid or ctenoid or ganoid scale • Cones present
- 14. . Class-osteichtyes Subclass-sarcopterygii Subclass-actinopterygii Superorder-chondostei Superorder-holostei Superorder-teleostei
- 15. . Subclass-sarcopterygii Order-crossopterygii order-dipnoi
- 16. Order-Crossopterygii • Caudal fin 3 lobed • Living fossil • Lobe-finned fishes • Example- latimeria
- 17. Order-Dipnoi • Also called lung fishes • protocercal tail • Air bladder lung like • Breath on land by air bladder which acts as lungs • Example- protopterus(african lung fish)
- 18. Protopterus
- 19. Superorder-chondrostei Order-polypteriformes Order-acipenseriformes
- 20. Order-polypteriformes • Rhomboid ganoid scales • Dorsal fin of 8 or more finlets • Example- polypterus(bichir)
- 21. Order-Acipenseriformes • Scaleless • Barbels on ventral side below mouth • example- acipenser(sturgeon)
- 22. Superorder-holostei Order-amiiformes Order-semionotiformes
- 23. Order-Amiiformes • Snout rounded • Long dorsal fin • Cycloid scale • Example- amia(bowfin)
- 24. Order-semionotiformes • Snout and body elongated • Ganoid scale • Example- lepidosteus(gar pike)
- 25. Superorder-Teleostei • Mnemonics- SSSSCCBOMPPATEL • 1 scopeliformes • 2 syngnathiformes • 3 Symbranchiformes • 4 scorpaeniformes • 5 clupeiformes • 6 cypriniformes • 7 beloniformes • 8 ophiocephaliformes • 9 mastacembeliformes • 10 pleuronectiformes • 11 perciformes • 12 anguilliformes • 13 tetraodontiformes • 14 echeneiformes • 15 lophiformes
- 26. Order-Scopeliformes • Habitat- deep sea • Phosphorescent organ • Dorsal and anal fin without spines • Example- harpodon(bombay duck)
- 27. Order-Syngnathiformes • Male have brood pouch for development of young • Example- hippocampus(sea horse)
- 28. Order-Symbranchiformes • Body snake like • Pectoral and pelvic fins are absent • Gill-slits join to form a ventral slit • Example- symbranchus
- 29. Order-Scorpaeniformes • Projecting spines from gill cover • Examples- pterois(scorpion fish)
- 30. Order-Clupeiformes • Pelvic fins abdominal • Weberian ossicles absent • Example- salmo(atlantic salmon)
- 31. Order-Cypriniformes • Carps and catfishes • Barbels in cat fishes • Air bladder well developed • Air bladder with duct to pharynx • Example- labeo
- 32. Order-Beloniformes • Pectoral fins are large and high on body • Example- exocoetus(flying fish)
- 33. Order-Ophiocephaliformes • Long dorsal and ventral fin • Accessory respiratory organ (air sac) present • Example- ophiocephalus(snake head)
- 34. Order-Mastacembeliformes • Body eel like • Continuos dorsal caudal and anal fins • Example- mastacembelus
- 35. Order-Pleuronectiformes • Flat fishes • Bottom dwellers • Both eyes present on one side • Example- pleuronectes
- 36. Order-Perciformes • two dorsal fin • Fin spines present • Accessory respiratory organ(labyrinthine organ) present • Example- anabas(climbing perch)
- 37. Order-Anguiliiformes • Body snake like • Pelvic fins absent • Continuos dorsal caudal and anal fin • Example- anguilla(eel)
- 38. Order-Tetraodontiformes • Inflate with swallowing water • Neurotoxin tetrodotoxin in internal body parts and skin • Example- tetraodon(globe fish/puffer fish)
- 39. Order-Echeneiformes • First dorsal fin form sucker on head • Show commensalism with host • Example- Echeneis/remora(suc ker fish)
- 40. Order-Lophiiformes • First of few dorsal spines with bulb like tip to lure prey • Example- lophius(angler fish/devil fish)