NEVER release an aquarium fish into the wild.

[krichardson]

It wouldn't shock me if there was a ray or two gliding around the bottom.

 

[Randal Crick]

Introducing an aquarium fish to the wild, wether native or non-native is a cardinal sin for a fishkeeper. Even wild caught native fish can pick up non-native disease in your tank that you could be unleashing upon the native ecological system. A non-native introduction is even worse. Non-native species compete with native fish for food and habitat, eat native fish eggs, and even destroy habitat all together. Non-native species that have caused significant problems include many species of carp, zebra mussels, the round goby, the spiny water flea, and species of snakeheads just to name a few. The introduction of snakeheads to native waters has caused the ban of ALL species of Channa to be banned from the United States. These beautiful monsters are no longer allowed to be kept in aquariums. There is also a sustained population of goldfish in the mississippi river and although they don't cause much of a problem, they give DNR officials ammo in trying to ban more species of fish that you and I keep. NEVER RELEASE YOUR FISH OR INVERTEBRATES INTO THE WILD. I hate to say it but euthanizing your fish is actually a better option than letting them go. I choose neither. If there is a fish I absolutely cannot keep anymore, I sell it or give it to another fish keeper that will provide a good home. I hope you will do the same.

Right back to you brother! Its hard to believe people do that and I have seen the results.When I lived in Alberta we had a nice little pond that was stocked with trout.People threw in some gold fish thinking that it would be cute.Disaster in the making.Gold fish do well in very cold climates.The pond was aerated for the trout and the gold fish now out number them.Very sad!

 

[krichardson]

Right back to you brother! Its hard to believe people do that and I have seen the results.When I lived in Alberta we had a nice little pond that was stocked with trout.People threw in some gold fish thinking that it would be cute.Disaster in the making.Gold fish do well in very cold climates.The pond was aerated for the trout and the gold fish now out number them.Very sad!

What do trout eat?....I would think that they would eat the eggs and fry of the goldfish.

 

[krichardson]

....not that I am defending putting the goldfish there but was just wondering.

 

[MN_Rebel]

What do trout eat?....I would think that they would eat the eggs and fry of the goldfish.

Goldfish are pretty fast growers and gain some immunity from predation.

 

[krichardson]

Goldfish are pretty fast growers and gain some immunity from predation.

I can't see newly hatched fry outrunning hungry fish but I guess you are right.

 

[Randal Crick]

What do trout eat?....I would think that they would eat the eggs and fry of the goldfish.

Not goldfish.People are pulling out more goldfish than trout.

 

[krichardson]

Not goldfish.People are pulling out more goldfish than trout.

Well at least it sounds as if someone is removing them.

 

[MN_Rebel]

I can't see newly hatched fry outrunning hungry fish but I guess you are right.

I can't see trout eating tiny eggs and newly hatched goldfish. Goldfish fingerlings perhaps and goldfish is likely to be in shallow/warm areas during summers while the trout will be in deeper areas to stay cool.

Goldfish is most common species in metro ponds/lakes, next to koi carps due to lack of predators. Even catfish, tiger muskies and bass (main predators of our metro lakes) are struggling to survive in heavily polluted lakes/ponds.

 

[DaniiloC]

Florida has a long list of nonnative fish species and they would have some new species added to the list every year. They have found few flowerhorns and a new unidentified pleco species.

As for the native predators, its usually largemouth bass, bullheads, gars, warmouth and few saltwater predators such as tarpons and red bass.

Thanks for the answer. I'd like to know how the native fishes deal with it, once almost all the fishes introduced in those waters are high level predators....