Clingfishes are typically small fish, with most species less than 2.8 in. in length. They have tapering bodies with single dorsal fins, and flattened heads. In most species, their pelvic fins are modified into a sucking disc. They have a cryptic colouration, and in some cases can rapidly change colour to match their background. These awesome little fish are peaceful and reef safe. They are very fun to watch and they are eating all types of prepared foods.