jollysue
Fish Connoisseur
Even though the Cory and platy are fry they are in a tank whose bio load is too much for a fish other than a Betta, and a normal size Betta--2-3"--is big for a gallon bowl w/o frequent even daily water changes. A Betta can breath from the surface but the Cory and platy can not get sufficient oxygen that way. Without frequent water changes in that bowl, ammonia will build quickly to a toxic level even for the Betta. Get a critter keeper for instance and put a sponge filter and heater in. The Cry fry will do ok and maby the platy too. If it is 3-4 gal the Betta might also might work out in it--filtered and heated.
