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Glossary: saddle

February 17th, 2012 — 3:51pm

Blotch-like marking extending over the dorsal surface in certain fishes. Highly variable in number and form depending on taxon, and often used as an identifying feature.

Glossary: saline

February 17th, 2012 — 3:51pm

A solution containing dissolved salts.

Glossary: salinity

February 23rd, 2012 — 3:30pm

General term for the salt concentration of water.

Glossary: salt bath

February 17th, 2012 — 3:51pm

Treatment against various parasites which involves placing a freshwater fish in a solution of saline water with the salt concentration and period of exposure variable depending on the size of the fish and severity of infection. Similar to a salt dip in that parasites are killed via osmotic shock, but of longer duration.

Glossary: sample

February 17th, 2012 — 3:51pm

In ichthyology, a collection of fishes made from a particular locality or specified area.

Glossary: sand

February 17th, 2012 — 3:51pm

Fine-grained silicate material commonly used as substrate. Often but not always chemically inert, and can therefore be used as a buffer.

Glossary: saprolegnia

February 17th, 2012 — 3:51pm

Genus of aquatic fungi, some species of which attack fishes. Normally a secondary pathogen attacking previously damaged tissue and causing cellular necrosis alongside other epidermal damage. Generally visible as a whitish or greyish filamentous fungus and thus commonly referred to as cotton-wool disease.

Glossary: saprophagy

February 17th, 2012 — 3:51pm

Feeding on dead or decaying organic matter.

Glossary: sarcoophagy

February 17th, 2012 — 3:51pm

Feeding on flesh.

Glossary: savanna

April 16th, 2013 — 1:10pm

Type of grassland ecosystem characterised by any trees present being spaced in such a way that they do not form a closed canopy, thus sufficient light reaches the ground to support unbroken herbaceous cover consisting primarily of grasses. Also spelled ‘savannah’.

Glossary: scalation

February 17th, 2012 — 3:51pm

See squamation.

Glossary: scale

February 17th, 2012 — 3:51pm

Dermal, plate-like structure covering the body in many fishes.

Glossary: scale count

February 17th, 2012 — 3:51pm

Count of a given range of scales. Used in taxonomical studies to differentiate and identify taxa.

Glossary: scaly

February 17th, 2012 — 3:51pm

Covered in or resembling scales.

Glossary: scaphium

February 17th, 2012 — 3:51pm

A Weberian ossicle.

Glossary: scapula

February 17th, 2012 — 3:51pm

Paired bone attached to the pterygials, actinosts or radials of the pectoral fin. Articulates ventrally with the coracoid and anteriorly with the cleithrum.

Glossary: scavenger

February 17th, 2012 — 3:51pm

Animal feeding on dead or decaying organic matter.

Glossary: school

February 17th, 2012 — 3:51pm

Tightly-aggregated group of fishes, normally of the same species, which tends to orient and move in the same direction; the act of schooling. Often confused with shoal.

Glossary: schooling

February 17th, 2012 — 3:51pm

Behaviour exhibited by members of a school in which individuals move in a coordinated manner in the same direction.

Glossary: scientific name

February 17th, 2012 — 3:51pm

Formal binomial or trinomial name of a species used in zoological nomenclature.