Spangled darter

📖 Overview

Spangled darter (Etheostoma obama), first described by Mayden & Layman, 2012 is a tiny fish in the family Percidae (order Perciformes). Adults typically reach 4.80 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Temperate waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 10 - 14; Dorsal soft rays (total): 10 - 13; Anal spines: 2; Anal soft rays: 8 - 11. This breeding male of this species (under the subgenus Doration) is distinguished by the following characters: a spinous dorsal fin with blue marginal and submedial bands, orange medial band, basal band with bright orange pigment; the soft dorsal, caudal, and pectoral fins have distinct bright orange spots on rays; soft dorsal and anal fins with blue in base of fin; anal fin sometimes with orange spots or streaks on rays; the face and lower head tangerine orange with blue on operculum, preoperculum, cheek, and suborbital bar (but not on lips and mid-gular region); quadrate lateral blue blotches extending ventrad from lateral line scale row; the basicaudal blue bar extending from dorsal to ventral margin of caudal fin; no frenum; incomplete lateral line, unpored scales modally >10 (12); cheek partially scaled; palatine teeth usually absent; present in 29% of specimens; modal counts for D XII-XIII,12, A 9, pectoral fin 15, principal caudal 15, caudal peduncle scales 16, preoperculomandibular canal pores 10; allozyme products of sIdh-A locus are characterized by relative mobilities b, e, and g .Cross section: oval.

🌀 Behaviour

Behavioural data for Spangled darter is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic. Temperate North America: United States of America (Tennessee).

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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