Can I keep a chub minnow in my tropical fish tank?
Can he spread disease or be aggressive?
- 1 decade agoFavorite Answer
In most states it is illegal to catch wild fish and put them in an aquarium or other pond. I would advise against it because of disease issues that can kill off your pet fish. If you really want to do this put the minnow in a seperate aquarium for a month and see if it lives, then try it. Temperature is also a major issue usually they like it much cooler than pet aquarium fish.Source(s): 35 years of fish keeping, fish breeding. Past many years of owning a fish pet store which sold a high volume of fish.