egg
Object laid by a female bird, reptile, fish, or invertebrate, normally roun or oval-shaped and containing a developing embryo surrounded by nutrient material and a protective case or shell; a female gamete; an ovum.
Used in 1,063 profiles
Results for “egg”
Ichthyological terms, not general ones.
egg scatterer
A species spawning above the bottom which scatters demersal eggs randomly.
Used in 81 profiles
eyed egg
A fish egg within which the embryo has developed to a point whereby the eyes are visible through the external membrane.
pelagic egg
Egg floating freely in the water column. Sometimes buoyant.
viscid egg
Fish egg with an adhesive surface allowing it to fasten to solid surfaces.
gravid
Pregnant or egg-bound; carrying eggs or young.
Used in 207 profiles
roe
Usually refers to a mass of fish eggs or egg-laden fish ovary but sometimes separated into 'hard' and 'soft' roe in reference to the female and male gonads, respectively.
ovoid
Egg-shaped.
Used in 2 profiles
spawning substrate
Particular substrate type required by a given egg-laying fish species for the purpose of spawning.
Used in 9 profiles
spawn
The eggs of fishes and other aquatic organisms; to deposit and fertilise such eggs.
Used in 673 profiles
acriflavine
An antiseptic used to treat external fungal plus general bacterial and protozoan infections in ornamental fishes and disinfect fish eggs in aquaculture. Also known as Acriflavinium chloride, ie., the chemical compound from which it is formed.
annual fish
A fish species which naturally completes its life cycle within a year at the end of which it dies leaving behind fertile eggs which typically survive in the soil and hatch during the next rainy season. Often used in reference to certain South American and African killifishes.
Used in 4 profiles
aplacental viviparity
Also known as ovoviviparity. Method of reproduction employed by certain fishes in which the eggs are fertilised and develop inside the female but there is no placental connection. The juveniles are free-swimming and able to feed as soon as they leave the female's body.
batch fecundity
The number of eggs released by a serial spawner during a single spawning event.
batch spawner
A fish species which deposite eggs on more than a single occasion throughout a particular spawning season rather than within a short period.
brood
Offspring of fishes, especially a single group hatching together and/or being cared for by the same parent(s); the act of tending and protecting eggs or offsping.
Used in 360 profiles
bubble nest
Aggregation of air-filled bubbles blown via use of an oral secretion constructed by males in some fish species. Such nests usually float and sometimes contain pieces of plant material for improved solidity. Fertilised eggs are deposited and incubated inside the nest and typically guarded by the male.
Used in 27 profiles
cavity brooder
Reproductive strategy characteristic of certain fishes, e.g., many cichlids, in which eggs in a cavity, cave or similar. The clutch is normally guarded aggressively by one or both parents. Such species may also be referred to as 'cave brooders/breeders'.
clutch
Used in ichthyology to refer to the number of eggs deposited in a single spawning event, particularly when some form of nest is used.
Used in 10 profiles
cuckoldry
Behavioural strategy seen in certain nest-building fishes in which one or more males that are not an accepted part of a spawning event fertilise some eggs. Such individuals are commonly referred to as sneaker, sneaky or satellite males.