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.
Fish head
The head of a fish is the part of the body from the beginning of the mouth to the back end of the gi..
Fish life cycle
Fish life cycle - a set of all phases of development, covering all periods of fish life - from birth..
Fish metamerism
From the Greek meta-after and te-ros-part.Fish metamerism - dissection of the fish body into a numbe..
Fish mortality
Mortality is the property of a population to reduce its number due to the death of individuals; it i..
Fish numbers dynamics
The number and biomass of fish of each species and individual populations do not remain constant, bu..
Fish sexual maturity
Fish sexual maturity - a period of fish life, during which fish have the ability to reproduce themse..
Fish stock
Fish stock - that portion of the population that is considered in terms of existing and potential ex..
Fish survival rate
The number of individuals (actually, as a percentage) surviving in a population over a period of tim..
Fish taste organs
Fish taste organs are sensitive chemical receptors (taste papillae) that perceive gustatory stimuli...
Fishing rope
Used in the fishing industry. They can be vegetable or synthetic, twisted or bra..
Fishing sinker
Weights are designed to straighten and sink the lower part of the fishing gear. Lead plates, metal r..
Flatworm
From the ancient Greek πλατύς - broad and ἕλμινθος - helminth.Flatworms (Platyhelminthes) are a type..
Flying fishes
Flying fish (Exocoetidae) is a family of Beloniformes. It has 8 genera, about 50 species. Body lengt..
Food availability
Nutrition is one of the most important functions of the body. The main functions of the organism - d..
Forced food
Forage objects that are used by fish in the absence of basic food. Changes in the composition of foo..