
SOME FRESHWATER AQUARIUM FISHES 

take care of themselves, like the sunfish, catfish, tiny eels, the young of the 
spiny-rayed fishes, etc.; and should be fed on small live food and boiled 
cereals. 








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Wtas aig tee 
Sty eRe at 4, LF: 
ow = ~ ye ie - ee ae 
= Bs EY GEE Zz : WN , sue “ i 

FIG. 46—Tessellated Darter, Boleosoma nigrum chmstedi 
THE SUCKER 
The Common Sucker, Catostomus commersonniu, Fig. 47, will also 
thrive in the aquarium. Its habits are similar to the Carp, and the young 

FIG. 47—Common Sucker, Catostomus commersonnii 
may be kept with goldfishes. Any of the goldfish foods may be fed, 
boiled oatmeal, flaked rice, or fine corn meal mush being the usual food, 
varied occasionally with small particles of earthworms, mussels and small 
snails. 
THE KILLIFISH 
Two species of the Killifish are vivacious little aquarium inmates. 
These are the Common or Green Killifish, Pundulus heterochtus, and the 
Barred Killifish, Faundulus diaphanus, Fig. 48, which inhabits brackish 
water. Both thrive in the aquarium. The Barred form is marked with 
steel-blue and silvery-white bars, and has a peculiar metallic lustre. It is 
entirely harmless and very lively in its habits. Its food should be a mixed 
animal and vegetable diet, sparingly fed. 
81 
