i had catilina goby's, when i had my potbelly seahorses,they did fine together because they are both cold water fish. when the temp. got up to 90 and up here last summer i lost everything, i did not get the air on in time they can die fast, when the water gets to warm,i floated jugs of frozen ice water in the tank but, it did not help it did for a little while,but, it just got to warm to help,you really need a chiller to keep them the right way an they cost alot of money.