mature
Fully-grown; adult.
Used in 953 profiles
Results for “mature”
Ichthyological terms, not general ones.
amphidromy
A form of diadromy in which fishes migrate between fresh and marine water as part of their life cycle for some purpose other than spawning, e.g., newly-hatched, arvae may be swept downstream into the sea where they spend a period of time before migrating back into fresh water to mature and eventually reproduce.
Used in 15 profiles
anastomosis
The connection of separate parts of a branching system to form a network. Sometimes used to describe the process by which a relatively regular, e.g. striped, patterning in juveniles of certain fishes breaks up as they mature.
Used in 6 profiles
broodstock
A group of sexually mature fish maintained specifically for production of fry.
cartilage
Specialised, toughened, elastic, fibrous connective tissue found in various parts of the body and forming the temporary skeleton in embryonic and very young fishes, but mostly lost as the majority of species mature. Retained throughout life in cartilaginous fishes.
Used in 26 profiles
cycling
Process of maturing a biological filter to some extent prior to the addition of livestock.
juvenile
Not yet fully mature though mostly similar in form to an adult specimen; young.
Used in 400 profiles
live sand
Type of substrate mostly used in marine aquaria collected directly from natural marine habiats and packaged in such a way as to maintain the resident microorganisms. Significantly reduces the time required to mature a new aquarium.
neoteny
Form of paedomorphism characterised by retention of juvenile features in an adult individual via slowed or delayed maturation.
nitrites
A salt or ester of nitrous acid. Produced in aquaria via metabolisation of ammonia by nitrifying bacteria of the genus Nitrosomonas, and toxic to fishes if present in sufficient concentrations, but in a mature system is further converted into less-harmful nitrates by other bacteria of the genus Nitrospira.
Used in 1 profile
nuchal hump
A protruding growth of tissue found on the head in sexually-mature, usually male, specimens of certain fishes.
Used in 42 profiles
progenesis
Form of paedomorphism characterised by retention of juvenile features in an adult individual via accelerated maturation.
progenetic
Undergoing accelerated sexual maturation, often with associated retention of juvenile features in adults.
Used in 16 profiles
subadult
An individual that has passed through the juvenile stage but not yet developed all adult characteristics, sexual maturity or size.
Used in 36 profiles
larva
Immature free-living juvenile form of an organism that undergoes metamorphosis before assuming the adult form.