Sunday, May 30, 2010
May 30, 2010 : Toadfish
Toadfishes are usually scaleless, with eyes set high on large heads. Their mouths are also large, with both maxillapremaxilla, and often decorated with barbels and skin flaps. They are generally drab in colour, although those living coral reefs may have brighter patterns. They range in size from 7.5 centimetres (3.0 in) length in and Thlassophryne megalops, to 57 centimetres (22 in) in the Pacuna toadfish.
Toadfishes of the genus Porichthys, the midshipman fishes, have photophores and four lateral lines. All toadfishes possess sharp spines on the first dorsal fin and on the opercle (gill cover). In fish of the subfamily Thalassophryninae, these are hollow and connect to venom glands capable of delivering a painful wound to predators.