Purchased at 1" mine grew at an average of 1/2" per year in a six foot tank.
This rate of growth has continued throughout their lives.
Mine are now 24 and biggest is 11.5".
See pics in the Clown Loach photo thread at Clown Loach Photos
Ideally you will have a minimum 72" x 24" x 24" aquarium.
I got a clown loach (by recommendation of the pet store person) to help me control nuisance snails in my 10 gallon tank. This little guy is like 1 ". I have a new tank (30 gallons) that I was hoping to move all my fish to ( the ones in the 10 gallon) plus new additions. Right now in my 30 gallons I have a gold snail and some red eye tetras to help me cycling my tank. The question is... Can I put my clown loach in the 30 gallons tank once is cycle and I start moving all the fish from the 10 gallon?
I ask the pet store person if he (clown loach)would hurt my pet snail Garry and he said no. But now reading how big they can get to grow... I am genuine worry about Garry...
What do you guys think?
I think that what you want to call your pet snail is your business.
But on the Clown Loach question not only is this fish a danger to your snail it is not acceptable to keep it alone because they need to be in groups and it is not acceptable to keep it in a 30 gallon because this will cause stunting.
be careful of advise you get from some rando cashier at a pet store.... ALWAYS come to fishlore and ask these people before you do anything these people know A LOT
clown loaches eat snails, that's all I know. Garry needs to be put in protective custody.