Cowfish - LongHorn, Lactoria cornuta Long Spine Sea Urchins these fish can be useful

these fish can be useful to have in a marine tank

Rockwork should be arranged so there are a variety of hiding places

are in fact immature females

Carbon should be replaced once it has reached approximately 50% of its original volume

Cowfish - LongHorn, Lactoria cornuta Long Spine Sea Urchins these fish can be usefulA peaceful fish that is best kept with other non aggressive species due to it being easily spooked. If this fish gets stressed it can release a toxin into the water which can wipe out a tank. This is rare but if you see the cowfish being picked on or near death remove the fish or the cause of the aggression. If the toxin has been released then do water changes. For this very reason, longhorn cowfish are not recommended for the beginner marine fish