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Ichthyology Exam II
40 Fish
| Question | Answer |
|---|---|
| Ichthyomyzon (lamprey) | no fins, 7 gill slits |
| Anguilla rostrata (freshwater eel) | jaws, pectoral fins |
| Acipensar (lake sturgeon) | scutes, no scales diamond shaped nose |
| Scaphyrinchus (shovel nose sturgeon) | shovel shaped nose, scutes |
| Polyodon spathula (paddlefish) | paddle shaped nose |
| Atractosteus spatula (alligator gar) | long snout 4 rows of teeth |
| Lepisosteus osseus (longnose gar) | pincer shaped nose, 2 rows of teeth |
| Lepisosteus platyrhincus (florida gar) | 2 rows of teeth, broad nose |
| Amia calva (bowfin) | long low dorsal fin, rounded caudal fin, spot at caudal base |
| Dorosoma cedpedianum (gizzard shad/ herring) | dorsal fin with long last ray, blunt nose, razored keel |
| Campostoma (stoneroller) | minnow, cartilaginous shelf in lower jaw, low ventral mouth |
| Carassius auratus (goldfish) | minnow,extremely long, low dorsal, forked tail |
| Ctenopharygodon idella (grass carp) | minnow,mullet body, fat caudal peduncle, long distance between anal fin and snout |
| Cyprinella (minnow) | minnow dorsal flag of dark melanophores |
| Cyprinus carpio (common carp) | minnow, body deep, long dorsal fin, barbels present, fleshy lips |
| Hybognathus regius (eastern silvery minnow) | minnow, very silver (even when preserved), crescent shaped mouth |
| Hybopsis rubrifrons (rosyface chub) | minnow, barbel present at corner of mouth, snout extends past mouth, black stripe |
| Luxilus (minnow) | minnow, terminal mouth, black band on dorsal |
| Nocomis leptocephalus (bluehead chub) | minnow has growths/bumps on head, single barbel |
| Notemigonus crysoleucas (golden shiner) | minnow, deep bodied, laterally compressed, nonscaled keel, sickle shaped dorsal |
| Notropis hudsonius (spottail shiner) | large eye, dark lateral stripe, pored lateral minnow,line, short round snout, pointed dorsal, bump/dip in snout, often spot on caudal base |
| Notropis lutipinnis (yellowfin shiner) | minnow,robust build, side stripe goes all the way through eye, no caudal spot, smooth snout |
| Phenacobius (suckermouth minnow) | minnow,complete lateral line, sucker-like mouth, curled at edges |
| Phoxinus (redbelly dace) | minnow,has red belly markings, lots of gill flaps under head |
| Pimephales (bull nosed minnow) | minnow,very blunt/rounded nose, crowded predorsal scales |
| Pteronotropis (high fin shiner) | minnow, large dorsal and anal fins |
| Rhinichthys | minnow,frenum present on snout |
| Semotilus | minnow,triangular barbell flap present |
| Carpiodes (carpsucker) | sucker,assymetrical subopercle, deepest bodied |
| Ictiobus (buffalofishes) | sucker,symmetric subopercle, very large and deep body, lips very fleshy |
| Minytrema melanops (spotted sucker) | sucker,spots evident |
| Catostomus commersonii (white sucker) | sucker,large bottom lip, cigar shaped body, light coloring |
| Erimyzon | sucker,deeper bodied,more evenly striped |
| Hypentelium nigricans (northern hogsucker) | sucker,concave, rectangular head, sucker mouth, saddles papillose lips |
| Moxostoma (redhorses) | sucker,red tipped fins, flat snout |
| Ameiurus (bullhead) | catfish,emarginated to rounded caudal fin, large size |
| Ictalurus punctatus (channel catfish) | catfish,arrow shaped head, forked tail |
| Noturus (madtom) | catfish,smallest catfish, belly extended, rounded caudal small body |
| Pylodictus olivaris (flathead catfish) | broad and flat head , underbite |
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