Seahorse Frequently Asked Questions / What size tank would be good for two seahorses?

It depends on the species of seahorse you plan on keeping, but for most species, you’ll want to start off with a 29 gallon aquarium for two. It goes roughly 30 gallons for a pair, and 15 each additional pair. A more detailed guide on tank sizes for seahorses.

Posted in: Keeping In Captivity