Siluridae 



Silurus giants 

 Trichomycteridae 

 Salmonidae 



Coregonus 



Oncorhynchus gorbuscha 



Oncorhynchus keta 



Oncorhynchus nerka 



Salmo clarki 

 SaJmo gairdneri 

 Salmo sa/ar 



Seasonal changes 

 Salmonidae 



Salmo gairdneri 

 Effect on fish 

 Description and 

 Acclimation 

 Salmonidae 



Oncorhynchus kisutch 

 Ion and water relationships 

 Pleuronecridae 

 • Platichthys flesus 

 Anguillidae 



Anguilla anguilla 

 Anguilla japom'ca 

 Nose 



Salmonidae 



Oncorhynchus kisutch 

 Oncorhynchus tshawytscha 

 Pars intermedia 

 Anguillidae 



Anguilla anguilla 

 Anguilla japonica 

 Adrenal cortex 

 Poeciliidae 



Poecilia reticulata 

 Corpuscles of Stannius 

 Poeciliidae 



Poecilia reticulata 

 Gills 



Pleuronectidae 

 Platichthys flesus 

 Developing egg 



Petromyzontomorpha 

 Petromyzon marinus 

 Salinity 



Salmonidae 



Oncorhynchus kisutch 

 Lethal environmental limits 

 Cyprinidae 



Pimephales promelas 

 Migrations 

 Salmonidae 



Oncorhynchus kisutch 

 Oncorhynchus tshawytscha 

 Diseases of fishes 

 Salmonidae 



Salvelinus fontinalis 

 Heavy metal pollutants 

 Cyprinidae 



Pimephales promelas 

 Pondfish productivity 

 Esocidae 

 Esox lucius 

 Artificial incubation 

 Salmonidae 



Salvelinus fontinalis 

 Carbon dioxide transport 

 Effect on fish 

 Cyprinidae 



Carassius auratus 

 Reservoirs 



Standing crop 

 Subterranean waters 

 Description and 

 Amblyopsidae 

 Habitat preference 

 Description and 

 Cyprinodontidae 

 Cyprinodon 

 Anesthetics 



Lethal environmental limits 

 Salmonidae 



Salmo gairdneri 

 Calcium 



Description and 

 Cottidae 



Cottus gobio 



806650 

 806643 

 806644 

 806644 

 806646 

 808376 

 808659 

 808138 

 807308 

 805975 

 806879 

 808149 



808506 



806128 



804404 

 804404 



809035 

 809035 

 808775 

 807587 

 806087 

 807504 



807477 



v.~-" 



808522 



807504 

 809038 



804067 

 806164 



Salmonidae 

 Salmo trutta 

 Effect on fish 

 Salmonidae 



Salmo gairdneri 

 Calcium sulfate 

 Effect on fish 



Lethal environmental limits 

 Ictaluridae 



Ictalurus punctatus 

 Distribution and occurrence 

 Semionotomorpha 

 Centrarchidae 



Pomoxis annularis 

 Percidae 



Stizostedion \itreum 

 Sciaenidae 



Aplodinotus grunniens 

 Serranidae 



Morone chrysops 

 Clupeidae 



Dorosoma cepedianum 

 Catostomidae 



Carpiodes carpio 

 Ictiobus bubalus 

 Ictaluridae 



Ictalurus melas 

 Ictalurus punctatus 

 Pylodictis olivaris 

 Fluoride 



Effect on fish 

 Salmonidae 



Salmo gairdneri 

 Hydrogen sulfide 

 Effect on fish 

 Teleostei 

 Iodine 



Oligotrophic lakes 

 Salmonidae 



Salmo gairdneri 

 Phosphorus 



Reservoirs 

 Strontium 



Effect on fish 

 Mineral content 

 Salmonidae 



Salmo gairdneri 

 Stress reactions 

 Salmonidae 



Salmo gairdneri 

 Sulfide 

 Fish kill 

 Teleostei 

 Organics in water 



Description and occurrence 

 Dasyatidae 

 Teleostei 

 Percidae 



Perca flavescens 

 Serranidae 



Morone americana 

 Cyprinodontidae 



Epiplatys bifasciatus 

 Fundulus diaphanus 

 Clupeidae 



Alosa aestivalis 

 Alosa pseudoharengus 

 Anguillidae 



Anguilla rostrata 

 Catostomidae 

 Effect on fish 

 Nose 



Salmonidae 



Oncorhynchus kisutch 

 Oncorhynchus tshawytscha 

 Migrations 

 Salmonidae 



Oncorhynchus kisutch 

 Oncorhynchus tshawytscha 

 Reservoirs 



Standing crop 

 Productivity 



Description and occurrence 

 Teleostei 

 Oxygen 



Description and occurrence 

 Elasmobranchii 

 Acipenseromorpha 

 Teleostei 



Environmental factors 



(continued) 



806818 



806165 



806165 



806165 



806165 



806165 



806165 



806165 

 806165 



806165 

 806165 

 806165 



805387 

 806161 



805985 

 805985 



806164 

 806160 



808464 

 806132 

 807234 

 808288 

 808464 

 808630 

 808996 



611 



