We have a regular 30-gallon fish tank. We have two Plecostomus fish, and they are about 9 inches long. We feed them algae pellets regularly. They have been 9 inches long for years. We monitor the water very well, and haven't had any fish die in 5 years. These plecos have a good skin color and look healthy.
Are these fish too big for our tank? Should I try to put them up for adoption? Are they unhappy because they don't have enough space?
I Googled this but I didn't find out enough info to know what size pleco is too big for our tank.
