The specific position or function that an organism fills in an ecosystem.
Glossary: ecological niche
Glossary: ecology
Study of the interactions occurring between organisms and their environments; also used to refer directly to such relationships.
Glossary: ecophenotype
A phenotype resulting from environmental or ecological conditions rather than genetic inheritance.
Glossary: ecosystem
A biological community comprising interacting organisms plus their physical environment.
Glossary: ecotype
A distinct population of a species adapted to occupy a particular habitat due to localised natural selection.
Glossary: ectoparasite
A parasite that lives outside its host. Opposite of endoparasite.
Glossary: ectopterygoid
A membrane, paired, bone in the upper jaw, located ventrally on the skull. Some fishes, such as serrasalmids, possess small tooth-like projections known as ectopterygoid teeth on this bone.
Glossary: eddy
Movement of water in the opposite direction to the main current, especially in a circular fashion; a whirlpool.
Glossary: edema
See oedema.
Glossary: 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.
Glossary: egg scatterer
A species spawning above the bottom which scatters demersal eggs randomly.
Glossary: Elasmobranchii
Subclass of Chondrichthyes, also known as cartilaginous fishes, that includes the sharks, skates and rays.
Glossary: elasmoid scale
Common scale-type. Found in all teleosts, and often separated into cycloid and ctenoid forms.
Glossary: electrofishing
Method of collecting fishes that uses electricity to stun them, commonly used for sampling populations during scientific surveys. Causes no permanent harm to fishes when carried out properly.
Glossary: electrogenesis
Production of electrical impulses in living organisms or tissues.
Glossary: electrogenic
Of or relating to production of electricity in living cells, sometimes used to in reference to fishes able to deliver an electric shock.
Glossary: electroreceptor
Sensory organ present in some fishes. Used to detect electrical current.
Glossary: emarginate
Having a notched margin or edge. Often used in reference to a caudal fin with a slightly concave shape.
Glossary: embryo
A young, unborn or unhatched organism in the process of development.
Glossary: empirical
Derived from or relating to experimental observation as opposed to theory.
Laetacara curviceps – Dwarf Flag Cichlid (Acara curviceps, Aequidens curviceps)
The Laetacara curviceps will nibble on soft leaves of live plants as I have observed.
21st Jan 2019
Tetraodon miurus (Congo Puffer)
I own one of these guys and they are truly awesome. His name is Quagmire (given the squared-out jaw.) If you’re not keen on the idea of the fish bei...
5th Nov 2018
Poecilia reticulata – Guppy (Lebistes poecilioides, Girardinus guppii )
You recommend keeping this species with Rasboras, Tetras and Corydoras? Guppies do best in very high pH, while Tetras, Corydoras and Rasboras do best ...
1st Nov 2018
Aphyosemion striatum – Red-striped Killifish (Haplochilus striatus, Epiplatys striatus)
The default photo isn't indicative of how most populations of A. striatum look like in reality. That is a very washed out looking male in my opinion. ...
13th Oct 2018
Nothobranchius rachovii (Bluefin Nothobranch)
The image shown for "Captive-bred, adult male individual of the 'Beira 98' collection." is incorrect. That isn't a 'Beira 98' male. The picture is s...
13th Oct 2018