Differing or deviating.

Differing from one another; exhibiting variety.

The state of being diverse.

A pouch or sac branching from a hollow organ or structure, such as the alimentary canal.

Abbreviation for deoxyribonucleic acid, a double-stranded, self-replicating genetic material comprised of a chain of nucleotides. Present in nearly all living organisms and is the main constituent of chromosomes. DNA segments containing genetic instructions are called genes and normally direct  production and activity of RNA.

Of, toward, on, in, or near the back or upper surface of an organism or part.

See dorsum.

Median, rayed, unpaired fin located on the dorsal surface (back) of most fishes. Its main purpose is to prevent the animal rolling and enable it to turn sharply. Some species possess more than one dorsal fin, in which case the anterior one is referred to as the first.

Positioned or orientated between the dorsal and lateral surfaces.

Positioned or orientated between the dorsal and ventral surfaces.

In a dorsoventral direction or sense.

The upper surface of the head, body or part.

Method of acclimation used for sensitive fish species in which the animals are first placed into a clean bucket or other container before water is slowly dripped in by siphon from the aquarium into which they are to be introduced. Can be carried out using a purchased kit or home-made using a length of airline […]

Accumulation of fluid in cellular tissue or other body cavity, symptomatic of some underlying infection or other health issue but not a disease in itself. May also be referred to as 'oedema' or 'edema'.

Feeding on hard-shelled or exoskeleton-bearing organisms such as molluscs.

Darkish in colour.

Condition of having atypically small size.