The bryozoan may harbor insects that provide food for small fish. The colony dies out by late fall, when they are often found as they break up and wash on shore. The individual is able to germinate after passing through the digestive system of animals. In the United States, freshwater bryozoans only occur east of the Mississippi River and north of the 39th parallel. Back to top My fish is too big for its aquarium.
Aquarium fish can carry diseases or exotic parasites.
Reports of larger aquarium species, such as pacu, piranha, and aruana are becoming more common in Indiana, causing concern by residents and possibly disrupting local ecological conditions. Many of the species that have become a problem for native plants and animals were first introduced by human actions. Take responsibility for your aquarium fish and either trade them to other aquarium owners or dispose of them properly. Better yet, know what size a species will likely attain before you purchase the fish and do not buy fish that will get too big for your aquarium. Fish die-offs are common in the spring.