Original sentence: Sterlets are found in aquarist stores.They are very friendly fish; when they are older, they will happily poke their noses out of the water for you to touch.They eat crustaceans and molluscs; however, they need special food such as TetraPond Sturgeon/sterlet sticks.They prefer medium sized and large ponds, require good water conditions, and may get entangled in plants or blanketweed or other algae
Edited sentence: Sterlets may require specialist food such as sterlet sticks, as they are unable to digest the vegtable proteins usually found in commercial fish foods.Sterlets require relatively large ponds with good water conditions, and may get entangled in plants such as blanketweed.They are friendly fish