20 gallon coldwater natives

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There are some small sunfish, many minnow species, several beautiful darters if you have lots of current. Try doing some collecting and seeing what you have in your area
 
goldfish
 
Goldfish are not N.A. natives.
For a 20g look into killifish, pygmy sunfish, madtoms, darters, smaller minnows and Enneacanthus sunfishes. You probably won't find most of them in the wild in CA but there are a few online places you can purchase them.
 
sandtiger;2606667; said:
Goldfish are not N.A. natives.
Nor can they live in a 20 gallon for an extended period of time....
 
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