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.
Swamp
A wet area of the earth's surface characterised by an abundance of specific bog vegetation and the p..
Swim bladder
Swim bladder - a peculiar bag of oblong shape (in carp fish has a transverse stretch), filled with g..
Symbiosis
Greek συμ-βίωσις - "life together", from συμ- - together + βίος - life.Symbiosis is a mutually benef..
Sympathetic nervous system
From the Greek sympathies sensitive, susceptible to influence.Sympathetic nervous system - part of t..
Sympatric species
Species arise from related forms with highly overlapping or intersecting ranges. Species formation i..
Symphysis
In the lower part of the head, you can distinguish, chin - the part of the head from the beginning o..
Syngnathidae
Syngnathidae, needlefish or seahorses are a family of fishes of the order Gasterosteiformes. The bod..
Taxon
Latin taxon, plural taxa; from Ancient Greek τάξις, "order, arrangement, organization".A taxon is a ..
Teeth
Teeth - bony formations located in the oral cavity of fish on the jaw and intermandibular bones, ton..
Teleostei
Teleostei is an infraclass of ray-finned fishes. The most numerous group of fishes of the bony class..
Temporary pond (puddle)
It is characterised by a small amount of water, it forms spontaneously and disappears quickly. A pud..
Tench
The tench (Tinca tinca) is a freshwater fish of the carp family. The only species of the genus. The ..
Terminal mouth
Distinguish three basic positions of the mouth of fish: upper, terminal, lower. There are also trans..
Testes
The testes are the male reproductive organs where spermatozoa are produced. They are paired oblong-s..
Tetraodontidae
Tetraodontidae is a family of fishes of the order Tetraodontiformes. The body is shortened, covered ..