1) Fish 2) Serranid 3) Serranid fish 
• (n.) Any serranoid fish of the genus Rhypticus; -- so called from the soapy feeling of its skin.
any of about 24 species of marine fishes constituting the family Grammistidae (order Perciformes), occurring from the Atlantic to the Indo-Pacific ...
<marine biology> Any serranoid fish of the genus Rhypticus; so called from the soapy feeling of its skin. ... (11 Mar 1998) ... 
Soap'fish` noun (Zoology) Any serranoid fish of the genus Rhypticus ; -- so called from the soapy feeling of its skin. 
[n] - fishes with slimy mucus-covered skin
noun fishes with slimy mucus-covered skin; found in the warm Atlantic coastal waters of America