Period of time between fertilisation and hatching.

Used in reference to a structure, e.g., a fin, with a small notch in the middle. Similar to emarginate.

Vernacular name for leaves of the leadwood tropical tree species Terminalia catappa which are commonly sold dried for use in aquaria because the organic compounds contained within them are considered beneficial for certain fish species. In particular they may aid in simulation of blackwater conditions and inhibit the growth of some undesirable microorganisms, as well as proving […]

Produced, growing, living, or occurring naturally in a given region, country, or environment

Artificially stimulating a fish species to reproduce in captivity.

Mouth located on the ventral surface of the head and oriented downwards.

Below. Often used as a prefix.

Of, relating to, located on, or being the region below the eye.

Section of the lateral-line system located below the eye. Almost extends to the snout.

Collective term for certain members of the protozoan Phylum Ciliophora, of which it is considered a subclass in certain classification systems. Members naturally inhabit infusions of decomposing organic material and some are cultured by aquarists in order to feed very small fish fry. The name was formerly applied to a much larger group of aquatic microorganisms […]

In phylogenetics or cladistics, the particular group under scrutiny in a study. Opposite of outgroup.

Inborn; inherited.

Not being composed of organic matter; of or relating to such substances; of, relating to or being a substance that does not contain carbon.

An organism feeding only or mostly on insects and their larvae.

Point on the body of a fish at which emerges the front or rear edge of a fin.

Isolated or separated.

Outer protective covering, e.g., the skin of an organism or the membrane enclosing an organ.

To breed with another race or species; hybridise.

See interbreed.

A Weberian ossicle.