Results for “genus”

Cyclops

Genus of freshwater copepods characterised and so named by possession of a single, large, median eye. Sometimes cultured as food for fry or very small fishes.

Used in 8 profiles

Daphnia

Any representative of the genus Daphnia; small, planktonic crustaceans commonly referred to as 'water fleas' and often used as food for ornamental fishes. They're members of the order Cladocera and reproduce by parthenogenesis.

Used in 749 profiles

designation

In icthyology, the nomenclatural act by which the type specimen of a previously or newly-established genus, subgenus, species, or subspecies is fixed via an express statement.

Used in 6 profiles

Enchytraeus

Genus of annelid worm of which two species, E. albidus and E. buchholzi, are cultured by aquarists to use as fish food.

family

Taxonomic rank below order and above genus. Contains one or more genera.

Used in 686 profiles

Gammarus

Large genus of amphipod crustacean in the family Gammaridae of which members occur in both fresh and salt water. An important source of food for many fishes.

Used in 2 profiles

genera

Plural of genus.

Used in 874 profiles

generic name

The scientific name of a taxon with the rank of genus; the first part of a binomen or trinomen.

Used in 299 profiles

head and lateral line erosion

Severe physical condition relatively common to certain fishes in captivity and also known as hole-in-the-head. Sometimes attributed to protozoan parasites of the genus Hexamita or an autoimmune disorder though these theories remains unconfirmed. Certainly associated with and exacerbated by poor water quality and/or nutrition, however. Initially manifests itself as small lesions, normally on the head of an affected individual, but may also extend along the lateral line and into the unpaired fins. If left unchecked these lesions can develop into larger, whitish pits and the condition may prove fatal. Often abbreviated to HLLE and similar to, but not analagous with, neuromastic pitting. Does not appear to occur in nature.

Used in 35 profiles

Hexamita

Genus of parasitic flagellates, some species of which inhabit the intestines of fishes. May cause head and lateral line erosion.

Hydra

Genus of freshwater cnidarian existing only in sessile, solitary polyp form attached to the substrate at one end and with a mouth surrounded by up to 12 tentacles at the other. Members are predatory, feeding mostly on small invertebrates, and regarded as pests in aquaria due to their appearance as whitish spots on submerged surfaces and tendency to prey on fish fry.

Used in 1 profile

mangrove

May refer to a mangrove swamp habitat and all species inhabiting it, only the trees and shrubs found in such a habitat, or more specifically, mangrove trees of the genus Rhizophora.

Used in 31 profiles

monospecific

Used in reference to a genus containing only a single species.

monotypic

Used in reference to a taxonomic group containing only a single member, e.g., a monotypic genus or family.

Used in 123 profiles

Mycobacterium

Genus of gram-positive bacteria of the family Mycobacteriaceae, members of which cause tuberculosis in fishes and other animals.

Mysis

Genus of mysid crustacean of which members inhabit both marine and freshwater environments. Some species are used as fish food in aquaria, and usually available frozen.

Used in 21 profiles

name-bearing type

In zoological nomenclature, the biological type (normally either a genus, species, or specimen) that determines how a name is applied.

Nitrobacter

Genus of bacteria previously thought to reduce nitrIte to nitrAte in an aquarium, but which does not occur, or occurs in negligible quantities, in aquaria.

Nitrosomonas

Genus of bacteria which reduces ammonia to nitrIte in an aquarium.

Nitrospira

Genus of bacteria which reduces nitrIte to nitrAte in an aquarium.