INDEX 



99 



Minnow, fathead: as food, 41 

 M.S. 222-Sandoz: as an 



anesthetic, 59 

 Mudminnows: as experimen- 

 tal fishes, 30; food of, 30; 

 occurrence, 30 



Oodinium, 51 



Overflow: when needed, 24; 



design for, 25 

 Oxygen: dissolved, effect of 



EoUution upon, 3; released 

 y plants, 18; relation to 

 aeration, 60; causes of loss, 

 66-67; fishes' requirements 

 for, 67; sources of, 66-67; 

 measurement of, 67-69; 

 importance in transport, 

 76; supplying during trans- 

 port, 76-77 



Parasites: relation to live 

 food, 38; identifying, 42; 

 protozoan, 49-51; Costia 

 spp., 49; Chilodon sp., 50; 

 Ichthyophthirius sp., 50; 

 Oodinium sp., 51; worms, 

 51; Gyrodactylus sp., 52; 

 Dactylogyrus sp., 52; Ar- 

 gulus spp., 52; Lernaea 

 spp., 52 copepods, 52; in 

 transport, 81-82 



Penicillin: use with hormone 

 injections, 56 



pH: relation to carbonates, 

 19; relation to use of thio- 

 sulfate, 21; safe range for 

 fishes, 72; relation to car- 

 bon dioxide, 77 



Pike, grass: diet, 31; as an 

 experimental fish, 31 



Pipe: choice of types, 21 



Pituitary: use to spawn, 55; 

 preparation of, 56 



Plants: effect on population 

 densities of fishes, 4; effect 

 on waste, 4; relation to 



growth inhibitors, 8; 



aquarium, 54 

 Platy: as an experimental 



fish, 34 

 Pollutants, biological: gen- 

 eral, 22; source, 22; 



removal, 22 

 Pollutants, industrial: in 



water supply, 20 

 Pollution of water by fishes, 3 

 Prophylactics: in transport, 81 

 Protozoans: as food, 38; 



parasites, 49-51 

 Pumps: air-lift, 62-63; 



centrifugal, 62 

 Pyridyhnercuric acetate, 50 



Quinaldine: as an anesthetic, 



58 

 Quinine, 50 



Reproduction: effects of 

 crowding, 4, 7; inhibitor 

 effect on guppies, 9; con- 

 trol of, 55-56 



Reproductive repressive 

 agents: control of, 10 



Roccal: a germicidal 

 material, 60 



Salt: disease treatment, 50 



Salts: fishes alter water con- 

 tent of, 4; increase in con- 

 tent in unchanged water, 

 7; removal of, 10 



Saprolegnia, 44, 46 



Shiner, golden: as an experi- 

 mental fish, 32; as food, 41 



Silt: in water supply, 21; 

 removal, 21 



Snails: eating of excess 

 food, 4 



Sodium chloride: occurrence, 

 20; removal, 20; toxicity to 

 fish, 20 



Spawning: effect of crowding 

 on, 8; effects of hght on, 

 18; control of, 55-56 



