| Re: Clown Loaches in short yes it is too small but if you get them young they can live in the 20 for the time being until you will move them into a larger tank. if you have another larger tank like 50G + then you can keep them in the 20 for now
They get along well with most fish so you can just try anything as long as it isnt too agressive.
It is a good idea to get 4 because they like to be in small groups but keep in mind they can grow pretty big just maek sure you have a 50G+ for them when they inevitably outgrow the 20G |