Ichthyological terms, not general ones.
Sensory organ comprising a series of neuromasts running along the head and flanks and used to detect movement and vibration in the surrounding water. Also known as the lateralis system and visible as one or more rows of pored scales of varying length in many fishes.
Used in 366 profiles
Any visibly-pored scale of the lateral line system, counts of which are often used as an identifying feature.
Used in 164 profiles
Severe physical condition relatively common to certain fishes in captivity and also known as hole-in-the-head. Sometimes attributed to protozoan parasites of the genus Hexamita or an autoimmune disorder though these theories remains unconfirmed. Certainly associated with and exacerbated by poor water quality and/or nutrition, however. Initially manifests itself as small lesions, normally on the head of an affected individual, but may also extend along the lateral line and into the unpaired fins. If left unchecked these lesions can develop into larger, whitish pits and the condition may prove fatal. Often abbreviated to HLLE and similar to, but not analagous with, neuromastic pitting. Does not appear to occur in nature.
Used in 35 profiles
Line of scales extending along scales along the flank. Used in meristic counts when the lateral line is absent or incompletely pored.
Used in 50 profiles
See lateral line.
The number of more-or-less vertically-arranged scale rows present between the upper end of the gill opening and the caudal fin base. Sometimes referred to as vertical scale rows and used in meristic counts when the lateral line is absent, incompletely pored or otherwise difficult to distinguish.
Used in 9 profiles
Curved downwards. Sometimes used in reference to the lateral line of certain fishes.
Genus of parasitic flagellates, some species of which inhabit the intestines of fishes. May cause head and lateral line erosion.
See head and lateral line erosion. Often abbreviated to HITH.
Used in 6 profiles
A countable trait, e.g., the number of rays in a fin, gill rakers, lateral line scales, etc..
Used in 4 profiles
Section of the cephalic lateral line canal anterior to the eyes.
Individual sense organ of the lateral line system, comprising nerve fibres connected to a cluster of sensory cells.
Severe physical condition of unconfirmed origin occurring in certain fishes which appears related to poor water quality and/or nutrition. The primary symptom is necrosis of the tissue surrounding neuromasts on both the head and body and if left unchecked the disorder can result in death. Similar to, but not analagous with, head and lateral line erosion, and does not appear to occur in nature.
Used in 1 profile
A scale possessing a visible pore, e.g. a lateral line scale.
Used in 38 profiles
See lateral line.
Part of the lateral line system extending up and over the eye.
Number of scales in the diagonal row between the orgins of dorsal and anal fins in a fish specimen, excluding the lateral line scales.
Used in 10 profiles
Section of the lateral-line system located below the eye. Almost extends to the snout.
Small, visible pores on the head and/or body. Part of the lateral line system.
Used in 1 profile