I fell in love with these at an auction a while back. I might have jumped the gun on these guys, but I loved their color pattern. They're still small, about 1.5 inches long. No substrate in the 20 gallon. just shells. Any advice on keeping these guys. Not sure if I'll keep them long term. Might sell them back to the auction. I'm just not sure yet. Advice on possible substrate, proper shells for these guys, appropriate tank size, etc. Thanks so much.
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