Ichthyological terms, not general ones.
A nomenclatural concept denoted by an available name used in an original description, and based, actually or potentially, upon its name-bearing type but having no defined taxonomic boundaries. Often used when the precise definition of a species or genus is unclear, such as when a name may refer to more than one taxon and is therefore in need of clarification.
Used in 33 profiles
Nominal, subordinate taxon within a family, genus, or species group that contains the name-bearing type taxon within that group that has been divided.
Leaf of the tree and shrub genus Quercus. Dried and used in aquaria to simulate certain natural conditions, especially those typical of blackwater habitats.
Used in 43 profiles
Genus of parasitic dinoflagellates occurring in marine and freshwater fishes and sometimes referred to as Piscinoodinium or 'velvet disease'.
Used in 7 profiles
Genus of unicellular ciliate protozoa with a shape resembling a grain of rice, a number of species of which are cultured as live food for small fishes and fry.
Used in 117 profiles
Generic term applied to numerous non-parasitic flatworms of the class Turbellaria. Also a genus within that class, Planaria. Various species occur in aquaria where they're most often associated with accumulation of uneaten food or organic material and normally considered pests.
Genus of aquatic fungi, some species of which attack fishes. Normally a secondary pathogen attacking previously damaged tissue and causing cellular necrosis alongside other epidermal damage. Generally visible as a whitish or greyish filamentous fungus and thus commonly referred to as cotton-wool disease.
Taxonomic rank into which a genus is divided, but otherwise difficult to delineate precisely with a single definition satisfying all eventualities still lacking to date. There exist a number of concepts of which the most popular in vertebrate taxonomy include the biological species concept and phylogenetic species concept.
Used in 1,790 profiles
In zoological nomencature, the second name in a binomen and in a trinomen. Has no nomenclatural function when used alone, though this is often done in aquarium literature or when referring to a species in passing if the genus being referred to is already clearly known. Also known as specific name.
Used in 24 profiles
A binomial, scientific name in which the genus and species names are the same, e.g., Tinca tinca.
Used in 1 profile
A taxonomic group or category of any rank, such as a species, genus family, or class.
Used in 42 profiles
Genus of aquatic annelid worms inhabiting the sediment layer in rivers, lakes and, less frequently, sewage channels. Raised commercially and sold live, frozen or freeze-dried as fish food.
Used in 254 profiles
Scentific name comprising a single word, used for taxa higher than genus.
Any member of the yellow-green algae genus Symbiodinium, comprising unicellular, flagellate protozoa that exist within the cells of other protozoa and some invertebrates, especially corals. They thus form an endosymbiosis in which they can provide up to 90% of the host's energy requirements.