Rockfish

The Madeira rockfish is a species of scorpionfish (Scorpaenidae) in the genus Scorpaena, found in the coastal waters of the eastern Atlantic Ocean and the Mediterranean Sea. This species reaches a length of around 14 centimetres (5.5 in) SL. The species was described by Achille Valenciennes in 1833 after a specimen from Madeira. Although S. maderensis is well represented in the areas that it is found, many key aspects of its biology are still unknown. The Madeira rockfish grows between 4.8 cm (1.89 in) and 13.1 cm (5.16 in) and weigh between 1.7 and 48.1 g, with males being larger in both categories. Females achieve their maximum size faster and live longer than males. The maximum recorded length for males and females is around 15 cm (5.91 in) and 9.0 cm (3.54 in) respectively. S. maderensisexhibits many similar characteristics to other Scorpaena, such as spiny fins and a reddish-brown splotched color but there is a lack of sufficient specific information. However, one well-known similar characteristic is the presence venomous spines due to an anterolateral glandular grove containing venom. Venom from Scorpaenidae causes many health issues and can be fatal if not treated.

Source: Wikipedia