Egg-shaped.

Of or relating to ovophily.

Reproductive strategy whereby the eggs are laid on a solid surface where they are immediately collected and brooded in the mouth of one or both parents. Seen in some Geophagus spp., for example.

Reproductive strategy in which fertilisation occurs internally and the eggs develop inside the body of the mother until hatched, at which point live offspring are born. There is no placental connection between mother and embryo unlike in viviparous species.

Exhibiting ovoviviparity.

Unfertilised female reproductive cell or gamete; unfertilised fish egg.

See oxbow lake.

Crescent or U-shaped lake formed when a meander of a river or stream is separated from the main channel. Less commonly used in reference to any U-shaped bend in a river or stream whether separated or not.

Chemical process whereby an atom or ion loses electrons and undergoes a subsequent increase in valence; the combination of a substance with oxygen; the act or result of being oxidised. Opposite of reduction.

Used in reference to a caudal fin with a tapering shape.

Process of providing, combining, or treating with oxygen.

Broad spectrum antibiotic used to treat both gram-negative and gram-positive bacterial infections.