Ichthyological terms, not general ones.
Condition in which all types of skin pigment are reduced due to defects in pigment cell differentiation with the normal result a partially (often referred to as 'pied' or 'piebald'), or more rarely, completely white animal. Differs from albinism, which is caused by a lack of melanin only, in several ways, with one of the most apparent being that albino animals typically have red eyes whereas leucism does not normally affect eye colour. Pronounced, and sometimes spelled, leukism.
An organism feeding on mud, or more specifically, other organisms that dwell within the substrate.
A fish species exhibiting ovoviviparity or viviparity.
Used in 234 profiles
Protective layer of epidermis in molluscs from which the shell is secreted in many species.
Broad spectrum antibiotic containing the active ingredient erythromycin. Used to treat gram-positive bacterial diseases and fungal infections.
Broad spectrum antibiotic with the active ingredient minocycline. Used to treat internal and external gram-negative bacterial infections.
Antibiotic used in aquaria as a wide spectrum treatment for bacterial and protozoan infections.
Tiny opening in an egg through which spermatozoa can enter.
A journey between different regions or countries at specific times of year.
Used in 56 profiles
Having both the male and female reproductive organs in the same specimen; hermaphrodite. Opposite of dioecious.
Used in reference to a genus containing only a single species.
Marked with variable spots or streaks; blotched.
Used in 21 profiles
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
Originating in a specific place or area; living or growing naturally in a particular region; indigenous.
Used in 426 profiles
Used in reference to an exotic species that has become successfully established in nature outside of its native range.
Used in 1 profile
A bony or cartilaginous arch-shaped structure arising from the dorsal side of a vertebra and enclosing the spinal cord.
Used in 2 profiles
In zoological nomenclature, the first combination of a generic and previously-published specific name.
An overlap in resource requirements by two or more species.
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.