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.
Spermatophores
From the ancient Greek σπέρμα "seed" and φορός "bearing".Spermatophores are seminal sacs in which ma..
Spillways
Hydraulic structures used to regulate the water level in an artificial reservoir or for its complete..
Spined loach
Spined loach (Cobitis taenia) is a freshwater fish of the family Cobitidae. Length is 8-10, rarely 1..
Spiral valve
The spiral valve is formed by twisting the internal growths of the wall of the large intestine (shar..
Sprattus
Sprattus is a genus of marine pelagic fish in the family Clupeidae. The abdomen is compressed at the..
Spring homothermia
The period when a body of water reaches the same temperature throughout the water mass from the surf..
Spring spawning fish
Fish that breed in the spring (herring, pike, perch, roach, ide, and many others).Male zander, perch..
Sprinkler (spiraculum)
An opening formed embryonically from the first gill slit and preserved in sharks, rays, sturgeons an..
Squalius cephalus
River fish of the spruce family of the carp family. Widespread in water bodies of Europe and Asia. R..
Squid
Squid (Teuthida) is a subdivision of the class Cephalopoda. The body is elongated, torpedo-shaped, w..
Starry sturgeon
Starry sturgeon (Acipenser stellatus) is a passage fish of the sturgeon family. Body length up to 2...
Stenobate organisms
Organisms are subdivided into eurybate (bathos - depth) and stenobate depending on their relationshi..
Stenobionts
From Greek στενός 'narrow' and Greek βίον 'living'.Stenobionts are hydrobionts capable of tolerating..
Stenogaline animals
Stenogaline animals are animals adapted to life in water with slight fluctuations in salt concentrat..
Stenoion fish
Stenoion fish - fish that live in a specific or narrow range of changes in the acidity of the enviro..