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Petromyzontiformes
Petromyontidae
Ichthyomyzon gagei (southern brook lamprey)
Image 1211
Carchariniformes
Carcharhinidae
Carcharhinus leucas (bull shark) Image 1613
Acipenseriformes
Acipenseridae
Scaphirhynchus platorynchus (shovelnose sturgeon)
Image 1048
Polyodontidae
Polyodon spathula (paddlefish) Image 1249
Lepisosteiformes
Lepisosteidae
Lepisosteus oculatus (spotted gar) Image 1232,
Image 2131
Lepisosteus osseus (longnose gar) Image 762
Atractosteus spatula (alligator gar) Image
1236
Anguilliformes
Anguillidae
Anguilla rostrata (American eel) Image 974
Clupeiformes
Clupeidae
Dorosoma cepedianum (gizzard shad) Image 1398
Dorosoma petenense (threadfin shad) Image 1415
Cypriniformes
Catostomidae
Catostomus commersoni (white sucker) Image 125
Hypentelium nigricans (northern hogsucker) Image
1046
Ictiobus cyprinellus (bigmouth buffalo) Image
1239
Ictiobus niger (black buffalo) Image 1115
Ictiobus sp. (buffalo) Image 1315
Minytrema melanops (spotted sucker) Image 933
Moxostoma erythrurum (golden redhorse) Image
731
Scartomyzon congestus (gray redhorse) Image
1285
Cyprinidae
Campostoma anomalum (central stoneroller) Image
285
Carpiodes carpio (river carpsucker) Image 1940
Ctenopharyngodon idella (grass carp) Image
1229
Cyprinella lutrensis (red shiner) Image 141
Cyprinella proserpine (Proserpine shiner) Image
1135
Cyprinella venusta (blacktail shiner) Image
1087
Cyprinella whipplei (steelcolor shiner) Image
1587
Cyprinus carpio (common carp) Image 1130
Dionda diaboli (Devils River minnow) Image
1110
Dionda episcopa (roundnose minnow) Image 1097
Dionda serena (Nueces minnow) Image 1082
Erimyzon oblongus (creek chubsucker) Image
1226
Hybognathus hayi (Cypress minnow) Image 1193
Luxilus cornutus (common shiner) Image 430,
Image 324
Luxilus cardinalis (cardinal shiner) Image 8
Luxilus pilsbryi (duskystripe shiner) Image
1571
Macrhybopsis aestivalis (speckled chub) Image
1366
Nocomis asper (redspot chub) Image 1028
Notemigonus crysoleucas (golden shiner) Image
1395
Notropis amabilis (Texas shiner) Image 2144
Notropis atherinoides (emerald shiner) Image
1599
Notropis atrocaudalis (blackspot shiner) Image
1221
Notropis bairdi (red river shiner) Image 1337
Notropis boops (bigeye shiner) Image 1594
Notropis buccula (smalleye) Image 1358
Notropis chalybaeus (ironcolor shiner) Image
1168
Notropis greenei (wedgespot shiner) Image 1588
Notropis harperi (redeye chub) Image 967
Notropis hubbsi (bluehead shiner) Image 1932
Notropis nubilus (Ozark minnow) Image 1569
Notropis orca (phantom shiner) Image 1643
Notropis oxyrhynchus (sharpnose shiner) Image
1311
Notropis rubellus (rosyface shiner) Image 397
Notropis telescopus (telescope shiner) Image
1583
Notropis topeka (Topeka shiner) Image 1781
Phenacobius mirabilis (suckermouth minnow) Image
1448
Phoxinus erythrogaster (southern redbelly dace) Image
309
Pimephales notatus (bluntnose minnow) Image
140
Pimephales promelas (fathead minnow) Image
1394
Pimephales vigilax (bullhead minnow) Image
1458
Platygobio gracilis (flathead chub) Image 1363
Pternotropis signipinnis (flagfin shiner) Image
1062
Pteronotropis welaka (bluenose shiner) Image
959
Semotilus atromaculatus (creek chub) Image 333
Characiformes
Characidae
Astyanax mexicanus (Mexican Tetra) Image 1318
Siluriformes
Ictaluridae
Ameiurus natalis (yellow bullhead) Image 336
Ameiurus nebulosus (brown bullhead) Image 1196
Ameiurus melas (black bullhead) Image 1376
Ameiurus serracanthus (spotted bullhead) Image
908
Ictalurus punctatus (channel catfish) Image
345, Image 442, Image
1431
Ictalurus lupus (headwater catfish) Image 867
Ictalurus furcatus (blue catfish) Image 1241
Noturus albater (Ozark madtom) Image 1579
Noturus exilis (slender madtom) Image 219
Noturus gyrinus (tadpole madtom) Image 2126
Noturus nocturnus (freckled madtom) Image 1219
Pylodictis olivaris (flathead catfish) Image
241
Satan eurystomus (widemouth blindcat) Image
1644
Trogloglanis pattersoni (toothless blindcat) Image
1645
Esociformes
Esocidae
Esox americanus vermiculates (grass pickerel)
Image 1151
Esox niger (chain pickerel) Image 1184
Percopsiformes
Aphredoderidae
Aphredoderus sayanus (pirate perch) Image 2130
Atheriniformes
Atherinopsidae
Labidesthes sicculus (brook silverside) Image
1261
Menidia beryllina (inland silverside) Image
1424
Cyprinodontiformes
Cyprinodontidae
Cyprinodon elegans (Comanche Springs pupfish) Image
880
Cyprinodon eximius (Conchos pupfish) Image
1322
Cyprinodon rubrofluviatilis (Red River pupfish) Image
1297
Cyprinodon variegatus (sheepshead minnow) Image
1471
Jordanella floridae (flagfish) Image 1059
Fundulidae
Fundulus blairae (western starhead topminnow) Image
1931
Fundulus catenatus (northern studfish) Image
1006
Fundulus chrysotus (golden topminnow) Image
2112
Fundulus notatus (blackstripe topminnow) Image
1016
Fundulus zebrinus (plains killifish) Image
1374
Poeciliidae
Gambusia amistadensis (Amistad gambusia) male
Image 1651
Gambusia amistadensis (Amistad gambusia) female Image
1650
Gambusia affinis (Mosquitofish) Image 1929
Gambusia nobilis (Pecos Gambusia) Image 874
Gambusia sp. (gambusia) Image 1102
Gambusia clarkhubbsi (San Felipe Gambusia) male Image
1442
Gambusia clarkhubbsi (San Felipe Gambusia) female Image
1445
Gambusia speciosa (western mosquitofish) Image
1114
Gambusia senilis (blotched gambusia) male Image
1647
Gambusia senilis (blotched gambusia) female
Image 1648
Poecilia latipinna (sailfin molly) male Image
1469
Poecilia latipinna (sailfin molly) female Image
1470
Scorpaeniformes
Cottidae
Cottus bairdi (mottled sculpin) Image 834
Cottus beldingi (Paiute sculpin) Image 648
Cottus greenei (Shoshone sculpin) Image 647
Perciformes
Centrarchidae
Ambloplites ariommus (shadow bass) Image 971
Ambloplites rupestris (rock bass) Image 1000
Centrarchus macropterus (flier) Image 2133
Elassoma zonatum (banded pygmy sunfish) Image
2117
Lepomis cyanellus (green sunfish) Image 443
Lepomis gulosus (warmouth) Image 1181
Lepomis humilis (orangespotted sunfish) Image
1054
Lepomis hybrid (bluegill & green sunfish hybrid) Image
70
Lepomis macrochirus (bluegill) Image 1153,
Image 1597
Lepomis marginatus (dollar sunfish) Image 955
Lepomis megalotis (longear sunfish) Image 547
Lepomis miniatus (redspotted sunfish) Image
2129
Lepomis punctatus (spotted sunfish) Image 926
Lepomis symmetricus (bantam sunfish) Image
2118
Micropterus dolomieu (smallmouth bass) Image
1303
Micropterus notius (Suwanee bass) Image 946
Micropterus punctulatus (spotted bass) Image
419
Micropterus salmoides (largemouth bass) Image
57
Micropterus treculi (Guadalupe bass) Image
1367
Pomoxis annularis (white crappie) Image 1941
Cichlidae
Tilapia aurea (blue tilapia) Image 1298
Percidae
Etheostoma blennioides (greenside darter) Image
1593
Etheostoma caeruleum (rainbow darter) Image
1590
Etheostoma fusiforme (swamp darter) Image 2120
Etheostoma gracile (slough darter) Image 1508
Etheostoma grahami (Rio Grande darter) Image
1343
Etheostoma histrio (Harlequin darter) Image
2146
Etheostoma lepidum (greenthroat darter) Image
1091
Etheostoma nigrum (Johnny darter) Image 42
Etheostoma parvipinne (goldstripe darter) Image
1140
Etheostoma proeliare (Cypress darter) Image
1200
Etheostoma spectabile (orangethroat darter) Image
1
Etheostoma sp. (sunburst darter) Image 1009
Etheostoma whipplei (redfin darter) Image 1455
Etheostoma zonale (banded darter) Image 985
Percina caprodes (logperch) Image 348
Percina carbonaria (Texas logperch) Image 1085
Percina macrolepida (bigscale logperch) Image
1928
Percina nigrofasciata (blackbanded darter) Image
925
Percina sciera (dusky darter) Image 2138
Stizostedion vitreum (walleye) Image 1436
Pleuronectiformes
Soleidae
Trinectes maculatus (hogchoker) Image 915
CRUSTACEA
Crayfish, Orconectes nais Image 13
Crayfish, Orconectes neglectus Image 392
SPONGES
Fresh-water sponge, Spongillidae Image 473
TURTLES
Western painted turtle, Chrysemys picta Image
346
Snapping turtle, Chelydra serpentina Image 445
Spiny softshell turtle, Trionyx spiniferus Image
405
Loggerhead Musk turtle, Sternotherus minor minor Image
940
Map turtle, Graptemys geographica Image 991
INSECTS
Aquatic caterpillar, Synclita obliteralis Image
810
Caddisfly case, Ptilostomi Image 497
Caddisfly case, Leptoceridae Image 172
Caddisfly case, Limnephilidae Image 412
Caddisfly case, Hydropsychidae Image 580
Caddisfly case, Polycentropodidae Image 376
Caddisfly larva, Polycentropodidae Image 516
Caddisfly net, Polycentropodidae Image 377
Caddisfly net, Hydropsychidae Image 15
Damselfly larva, Argia Image 388
Black Clubtail dragonfly, Hagenius brevistylus Image
1574
Dragonfly larva, Urythemis simtlicocollus Image
602
Dragonfly larva, Epicordulia princepirs Image
626
Hellgrammite, Corydalus cornutus Image 390
Mayfly larva, Stenonema feoratum Image 237
Mayfly larva, Hexagenia Image 408
Mayfly larva, Heptageniidae Image 236
Mayfly larva, Caenidae Image 357
Spongilla-fly larva, Sisyridae Image 794
Red freshwater mite, Limnochares Image 591
Water scorpion, Ranatra Image 163
PLANTS
Algae Image 205, Image
278, Image 576, Image
784
Coontail, Ceratophyllum Image 453
Duckweed, Spirodela Image 456
Watercress, Nasturtium officinale Image 264
MISCELLANEOUS
Aquatic earthworm, Oligochaeta Image 175
Apple snail Image 937
Bryozoan, Fredericella indica Image 16
Leech, Hirudinea Image 658
Tadpole, Rana catesbeiana Image 837
Snails, Gastropoda Image 679, Image
680
Freshwater Hydra Image 633
Mudpuppy, Necturus maculosus Image 998
Artistic
Underwater view of riffles Image
783
Behavior
Sunfish following a turtle Image
438
Spawning
Spawning stonerollers Image
314
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