These are the marine animals of the class Cephalopoda, order Sepiida, and phylum Mollusca. They sound like fishes as per their name, but they are not fish but molluscs. The naming is made according to their shell, the cuttlebone. They don’t even look like fishes.
These animals have 8 arms, 2 tentacles and large W-shaped pupils. The tentacles have denticulated suckers which are used to secure prey. They size from 15 to 25 cm (5.9 to 9.8 in) generally with the largest species Sepia apama growing 50 cm (20 in) in mantle length and weighing up to 10.5 kg (23 lb). With the one of the largest brains in proportion with body they are among the most intelligent invertebrates.
These are one of the popular seafood in parts like Mediterranean, East Asia, Europe and the English Channel. Their natural ink ‘Sepia’ was once an important dye.
These animals belong to genus Enteroctopus, phylum Mollusca, class Cephalopoda and order Octopoda. They are characterized by their larger size, and hence got the name ‘giant’. Species of Enteroctopus are restricted to the temperate regions of Northern and Southern Hemispheres. The genus has 4 species such as E. dofleini occurring in northern Hemisphere, E. megalocyathus occurring on the southeastern coast of South America, E. magnificus on the southwestern coast of Africa and E. zealandicus occurring in temperate New Zealand.
The largest member of this genus is E. dofleini that has the record of being world’s largest octopus as well. As per direct measurements, one individual weighed 71 kg (156.5 lb) with the total length of 4 m (13 ft). The other members are smaller ranging from 1 m to 1.5 m in length.
These solitary creatures are considered as the most intelligent invertebrates. They have the capacity to recognize humans since they show characteristics of changing body texture, jetting water and other behaviors when they come in contact with humans.
Taxonomically these freshwater fish belong to tribe Tilapiini, family Cichlidae, order Perciformes, class Actinopterygii, and phylum Chordata. There are nearly hundred species of cichlid fish from the tilapiine cichlid tribe belonging to this common generic name. They inhabit shallow streams, ponds, rivers and lakes. They are of increasing importance in aquaculture (browse this site) and aquaponics.
All the members of this genus are unable to survive in cooler waters below 21 0C (70 F). All fishes of this genus are popular as different types of delicious food. The interesting fact about these fishes is they help increase the population, size and health of other fish in the same pond since they don’t compete with other fish for food. They often consume plants and nutrients which are not needed for other fish.
Christopher Luis is a freelance copywriter and he enjoys writing on wide range of topics such as food recopies, cooking frozen shrimp. In this article he provides Important Information about Cuttlefish, Giant Octopus and Tilapia.