WebOstariophysi. Ostariophysi is the second-largest superorder of fish. Members of this superorder are called ostariophysians. This diverse group contains 10,758 species, about 28% of known fish species in the world and 68% of freshwater species, and are present on all continents except Antarctica. They have a number of common characteristics such ... The Gymnotiformes /dʒɪmˈnɒtɪfɔːrmiːz/ are an order of teleost bony fishes commonly known as Neotropical knifefish or South American knifefish. They have long bodies and swim using undulations of their elongated anal fin. Found almost exclusively in fresh water (the only exceptions are species … See more Anatomy and locomotion Aside from the electric eel (Electrophorus electricus), Gymnotiformes are slender fish with narrow bodies and tapering tails, hence the common name of "knifefishes". They have neither See more There are currently about 250 valid gymnotiform species in 34 genera and five families, with many additional species yet to be formally described See more Gymnotiform fishes inhabit freshwater rivers and streams throughout the humid Neotropics, ranging from southern Mexico to northern Argentina. They are nocturnal fishes. The families Gymnotidae and Hypopomidae are most diverse (numbers of species) and … See more • Photos of various gymnotiforms See more Most gymnotiforms are weakly electric, capable of active electrolocation but not of delivering shocks. The electric eels, genus Electrophorus, are … See more Gymnotiformes are among the more derived members of Ostariophysi, a lineage of primary freshwater fishes. The only known See more • Electric fish • Gymnarchus, the African knife-fish (Mormyroidea) See more
Gymnotiformes - Wikispecies - Wikimedia
WebSternopygidae. Genus: Sternopygus. J. P. Müller & Troschel, 1849. Sternopygus is a genus of glass knifefishes found in tropical and subtropical South America (south to the Río de la Plata Basin ), and Panama. They inhabit a wide range of freshwater habitats, from fast-flowing rivers to essentially static waters in floodplains, and shallow ... WebGymnotiformes is thought to be the sister group to the Siluriformes from which they diverged in the Cretaceous period (about 120 million years ago). The families are classified over suborders and superfamilies as below. Order Gymnotiformes. Suborder Gymnotoidei Family Gymnotidae (banded knifefishes and electric eels) Suborder Sternopygoidei grandma in the lorax
What does gymnotiformes mean? - definitions
WebThe Percopsiformes / p ɜːr ˈ k ɒ p s ɪ f ɔːr m iː z / are a small order of ray-finned fishes, comprising the trout-perch and its allies. It contains just ten extant species, grouped into seven genera and three families.Five of these genera are monotypic.. They are generally small fish, ranging from 5 to 20 cm (2.0 to 7.9 in) in adult body length. WebWhat does gymnotiformes mean? Information and translations of gymnotiformes in the most comprehensive dictionary definitions resource on the web. Login . WebGymnotiformes (knifefish) are Neotropical electric fish easily recognized by the anguilliform body (Fig. 1.10), with loss of the dorsal, adipose, pelvic, and caudal fins (only Apteronotidae and Electrophorus maintain a caudal fin). Despite the anguilliform shape, its movement is mainly due to the undulation of the anal fin that extends along ... grandma in sign language pictures