Actinopterygii (ray-finned fishes) > Lophiiformes
(Anglerfishes) > Oneirodidae
Etymology: Microlophichthys: Greek, 'mikros' = small + Greek, 'lophos' = crest or tuft + Greek, 'ichtys' = fish (put together, alludes to this "fish with a tiny lure") (Ref. 86949).
Environment / Climate / Range
Marine; bathypelagic; depth range 800 - 2200 m (Ref. 86949). Deep-water
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.8 cm TL (female)
Morphology | Morphometrics
soft rays: 4 - 6. Metamorphosed females distinguished by the following characteristics: wide ethmoid cartilage and vomer, wider than distance between anterolateral tips of lateral ethmoids and frontals; presence of vomerine teeth; large and nearly circular nasal foramina; frontals short, lying posterior to the ethmoid region, dorsal margin convex; ventromedial extensions of frontals approach each other on midline, making contact with parasphenoid; frontals separated from prootics; presence of pterosphenoid; anterior end of illicial trough wider and shallower than posterior end; well developed sphenotic spines; symphysial cartilage of upper jaw longer than wide; lower jaw with well developed symphisial spine; hyomandibula with double head; well developed quadrate spine, longer than articular spine; deeply notched posterior margin of opercle; short and broad subopercle, dorsal end rounded or tapering to a blunt point, ventral end nearly circular; first pharyngobranchial reduced to a tiny remnant; absence of second hypobranchial; caudal fin rays without internal pigmentation; extremely short illicium, approximately equal to length of escal bulb; pterygiophore of illicium cylindrical throughout, emerging on snout from between frontal bones, anterior end barely exposed, posterior end concealed beneath the skin; first ray of dorsal fin well developed; dorsal fin rays 5-7; anal fin rays 4-6; short and broad pectoral fin lobe, shorter than longest rays of pectoral fin; pectoral fin rays 18-20; coracoid lacking posteroventral process; simple pelvic bones, with or without distal expansion; skin smooth and naked, without dermal spinules; darkly pigmented skin of caudal peduncle extends well past base of caudal fin (Ref. 86949).
Tropical and subtropical parts of all oceans.
Also mesopelagic (Ref. 10524).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Bertelsen, E., 1990. Oneirodidae. p. 498-507. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post, and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 10524)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), based on all LWR estimates (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .