Results for “lateral”

antorbital

A small, paired dermal bone lying lateral to the nasal bone in front of the eye.

Used in 2 profiles

chondrocranium

Primitive, cartilaginous skeletal structure enclosing the brain and inner ear formed in the embryo and usally becoming ossified at a later stage. Retained as cartilage throughout life in some fishes.

decurved

Curved downwards. Sometimes used in reference to the lateral line of certain fishes.

heredity

The passing of characteristics or traits from parent or ancestor to offspring or later generations; the sum of such inherited features or their characteristics.

Hexamita

Genus of parasitic flagellates, some species of which inhabit the intestines of fishes. May cause head and lateral line erosion.

hole-in-the-head

See head and lateral line erosion. Often abbreviated to HITH.

Used in 6 profiles

hypurapophysis

Paired, bony lateral extensions off the parhypural. Also known as 'parhypurapophysis'.

Used in 8 profiles

medial

Relating to, situated on or in, or extending towards the middle; median. Opposite of lateral.

Used in 183 profiles

meristic character

A countable trait, e.g., the number of rays in a fin, gill rakers, lateral line scales, etc..

Used in 4 profiles

nasal canal

Section of the cephalic lateral line canal anterior to the eyes.

neuromast

Individual sense organ of the lateral line system, comprising nerve fibres connected to a cluster of sensory cells.

neuromastic pitting

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

palatine

In morphology, a paired lateral bone above the mouth lying between the vomer and maxillary; the presence or absence of teeth on the palatine is a defining character in the classification of some fishes. Also known as autopalatine.

Used in 12 profiles

parhypurapophysis

Paired bony lateral extensions off the hemal arch of the parhypural. Also known as 'hypurapophysis'.

Used in 1 profile

pored scale

A scale possessing a visible pore, e.g. a lateral line scale.

Used in 38 profiles

supraorbital canal

Part of the lateral line system extending up and over the eye.

transverse scale row

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

voucher specimen

Specimen housed in a permanent, usually museum, collection, ideally including detailed collection data such as date, location, etc.. Assigned a specific code in order in case later reference is required. May be a type specimen.

branchiostegal ray

One of the dermal, bony (sometimes cartilaginous), bilaterally paired, flattened struts inserting on the epihyal and/or ceratohyal (sometimes the interhyal and hypohyal) that supports the branchiostegal membranes.

Used in 4 profiles