Dictionary of Ichthyology
This dictionary of ichthyology contains specialist terms used in the teaching of undergraduate students. The terms are arranged alphabetically for ease of reference.
In addition to ichthyology, terms from hydrobiology, zoology, anatomy, fish farming and other related disciplines are included.
Where terms have different interpretations, we have assigned the most common interpretation in our view.
This dictionary is constantly being added to and modified.
If you do not agree with the above interpretation of the Terms, please explain your understanding in the comments to these Terms.
We invite you to participate in the development of a modern ichthyological vocabulary.
We will consider any criticism and take it into account when describing dictionary terms.
Embolism
Embolism in fish - blockage of blood or lymph vessels by foreign particles (in this case gas bubbles..
Embryo
Embryogenesis is the process of embryonic development from fertilization to hatching from the egg.An..
Endangered species
Fish species whose numbers have declined significantly or have reached critical levels in all or par..
Endemics
From the Greek ἔνδημος "local."Endemism - the distribution of organisms in a particular geographic a..
Endocrine system
The endocrine system is a set of specialised organs that secrete biologically active substances - ho..
Endogenous nutrition
Endogenous nutrition - nutrition at the expense of internal resources of the organism. At all stages..
Environmental valence
The limits of an organism's resilience to an environmental factor. Refers to the ability of a specie..
Epibate type
There are three types of caudal fin: epibatic - the upper lobe is larger than the lower lobe (sharks..
Epibenthos
Epibenthos - a group of benthic organisms that live on the surface of the bottom of a water body and..
Epibranchial organ
Epibranchial organ - an additional respiratory organ, is a protrusion of the pharynx, the mucous mem..
Epipelagial
Epipelagial is the upper strata of seas and oceans up to a depth of 200 m, most richly populated wit..
Epizootiology
From the Greek Epi - on, zoon - animal, logos - science, concept.Epizootology is the science that st..
Esocidae
Esocidae is a family of fishes in the family Salmoniformes. They have a pronghorn body. The scales a..
Eurasian carp
Large omnivorous fish with a thick, moderately elongated body covered with large, smooth, tightly se..
European perch
Perca fluviatilis is a fish of the perch family. It is up to 40-50 cm long and weighs up to 2 kg. It..