Fish Biology RSS
Why Do Redfish Have Spots?
Fish, as well as all other taxa, are given two types of names: a scientific name, which is derived from the Latin or Greek language, and an official common name given by scientific entities in order to standardize public usage, although, most of the time, the scientifically accepted common name is the least familiar amongst anglers. The scientifically accepted common name of the fish in this article is the red drum, although South Carolinians and Georgians refer to it as spot-tail bass, while North Carolinians refer to it as channel bass, and any state associated with the Gulf of Mexico...
Fisheries Management: Part 1
Stock enhancement (SE), or the release of cultured fish into the wild to support native fisheries, has been used since the late nineteenth century. The goal of SE typically is to overcome the phenomenon of recruitment limitation (Munro and Bell 1997, Doherty 1999) in which the natural supply of juveniles fails to reach the carrying capacity of the habitat even though there may be sufficient numbers of spawning adults; however, it is also possible to supplement wild stocks without regard to the level of recruitment to simply support increased fishing pressure (Lorenzen 2005).
Fish Heaters - It's A Cold World Down There
Today we’re breaking down endotherms vs. ectotherms, specifically as it pertains to fishes and how they deal with thermoregulation. The prefix endo- means ‘internal’ or ‘within’ and the prefix ecto- means ‘external’ or ‘outside’. The suffix therm- means ‘heat’. In fish speak, and biology speak in general, an endotherm is an organism that generates heat within its own body. In colloquial terms, we know these animals as warm-blooded. Ectotherms are just the opposite in that they cannot generate heat from within their own bodies (i.e., cold-blooded), and must rely on external heat sources for body temperature regulation (e.g., the sun).
Caudal Fin Throttle Fin - An Article on the Different Types of Caudal Fins and How Fish Use Them
The caudal fin is the culprit for every heart wrenching snapped line and straightened hook. The caudal fin is the reason we fishermen enjoy fishing – the thrill of the fight. We are addicted to the caudal fin. Dive in with us and explore species-specific evolutionary adaptations of the caudal fin, and how they are used.