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Salty&Onion

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Welcome to the forum :hi:
I'm afraid the tank is too small for harlequins and cories, both of these species need a 20 gallon tank. Corydoras and harlequins need a shoal of 6 or more and soft water.
 
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Joe80

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Welcome to the forum :hi:
I'm afraid the tank is too small for harlequins and cories, both of these species need a 20 gallon tank. Corydoras and harlequins need a shoal of 6 or more and soft water.
Hello there. Oh really? I did lots of research before choosing fish, and I read that the minimum tank size for Corys and Harlequins is 10 gallon.
 

Salty&Onion

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Hello there. Oh really? I did lots of research before choosing fish, and I read that the minimum tank size for Corys and Harlequins is 10 gallon.
There is a lot of misinformation around. They both need a 20 gallon tank, harlequins best do in a 20 gallon tank and you also could put in more than 6 of each species.
 

Retired Viking

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Which doesn't mean they're happy in such small tank.
I'd recommend you getting a 20 gallon tank as it gives your fish space and more stocking options.
I do agree with @Salty&Onion a 20 gallon would be better, they need the extra room, you do have a nice looking tank. I have a 20 gallon and really like the size and how easy it is to work in.
 

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