| Adipose Fin - A relatively small fleshy fin on the back of some fishes between the dorsal and caudal fins.|
Anadromous - Fishes living in the sea, which enter freshwater to spawn.
Anal Fin - The fin on the median ventral line between the anus and the tail.
Anal Spines - Stiff, pointed processes located on the anterior portion of the anal fin.
Barbels - Slender, Tactile, whiskerlike projections extending from the head of some fishes.
Benthic - Bottom dwelling.
Carnivorous - Flesh eating.
Catadromous - Fish living in fresh water but spawning in the sea.
Caudal Fin - The tail fin.
Caudal Peduncle - The slender portion of a fish’s body just found in front of the tail fin.
Caudal Saddle - A mark or blotch of color saddling the caudal peduncle of some fish.
Circumtropical - Encompassing the tropical regions of the world.
Ctenoid Scale - A bony scale with tiny spines on the exposed surface.
Cycloid Scale - A bony scale with a smooth surface.
Demersal - Bottom dwelling.
Dentition - The type, arrangement and number of teeth of an animal.
Detritus - Finely divided material suspended in the water that usually settles to the bottom.
Dorsal Fin - The median fin on the back of fishes. It may be divided into spiny-rayed and soft-rayed parts.
Endemic - Belonging or native to a particular place.
Fecundity - The number of eggs produced by a mature female.
Finlets - A series of small, usually separate fin rays situated behind the main dorsal fin.
Fork Length - The measurement from the tip of a fish’s snout to the fork in the tail.
Fusiform - Shapes like a spindle; tapered at both ends.
Ganoid Scale - A diamond-shaped scale having an enamel-like surface and not overlapping to any extent.
Gill Arches - The bony supports to which the gills are attached.
Gill Rakers - A series of bony projections attached to the inside of the gill arches, used to strain food from the water.
Incisors - front teeth flattened to form a cutting edge.
Lateral - Pertaining to the side.
Lateral Keel - A ridge situated on the side.
Lateral Line - A longitudinal line on each side of a fish’s body, composed of pores opening to sensory organs.
Longevity - Length or duration of life.
Mandible - The lower jaw.
Maturity - The age or size when a fish is able to reproduce.
Molars - Grinding teeth usually situated toward the back of the mouth.
Nocturnal - Active at night.
Nonstriated - Not marked with furrows, stripes, or streaks.
Nuchal - Relating to, or lying in the region of the back of the neck.
Ocellus - A spot of color encircled by a band of another color.
Olivaceous - A deep shade of green; olive.
Omnivorous - Eating all kinds of foods, indiscriminately.
Opercular Flap - A fleshy extension of the rear edge of the gill cover.
Operculum (Opercle) - The gill cover.
Opportunistic - Nonselective in feeding.
Outcropping - A part of a rock formation that appears at the surface of the ground, or bottom of the sea.
Ova - Eggs.
Pectoral Fins - The paired fins attached to the shoulder girdle, immediately behind the gill opening.
Pelagic - Living or growing in the region of free waters in the seas and inland lakes.
Pelvic Fins - The paired hind fins.
Peritoneum - The membrane lining of the body cavity.
Plankton - The small animals and plants that float or drift in the water, usually on the surface.
Pod - A small group of several fish.
Population - The whole number of a species inhabiting or occupying a specific geographical locality.
Potamodrous - Migrating in fresh water; making short spawning runs in fresh water.
Preoperculum - A bone before or in front of the opercle.
Protgynous Hermaphrodite - A fish that changes sex from female to male with age or size.
Sargassum - Any of several brown algae that are widely distributed in the warmer waters; the floating common gulfweed.
Scute - An external horny or bony plate or scale.
Stock - A reproductively distinct population of fish; to move from one place to another, as when introducing a species to a body of water where it does not naturally occur.
Substrate - The base on which organisms live.
Terminal - At the end or tip.
Total Length - The measurement from the tip of a fish’s snout to the tip of the tail.
Ventral Fins - The pelvic fins.
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