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> Acanthuriformes (Surgeonfishes) > Chaetodontidae (Butterflyfishes)
Etymology: uejoi: Named for Mr. Takuya Uejo, who first recognized its uniqueness while studying the taxonomy of species of Roa.
Eponymy: Takuya Uejo is a Japanese ichthyologist who was affiliated with the Graduate School of Fisheries, Kagoshima University. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser riff-verbunden; tiefenbereich ? - 172 m (Ref. 126057). Tropical

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Western Pacific: Mariana Is., Guam.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 10.1 cm SL Männchen/unbestimmt; (Ref. 126057)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 11; Rückenflossenweichstrahlen (insgesamt) : 21 - 22; Afterflossenstacheln: 3; Afterflossenweichstrahlen: 16 - 17; Wirbelzahl: 24. This species is distinguished from its congeners by the following set of characters: pored lateral-line scales 36-43; distal portion of the outer branch of first pelvic-fin soft ray a long filament, extending considerably from posterior contour of fin, first soft ray length 119%-123% of second ray; no black blotch on membranes associated with the first and second dorsal-fin spines; upper jaw naked, scaleless; pelvic-fin spine and first soft ray broadly whitish, and the remaining portions of fin black (in preserved specimens); the second black body band crossing pectoral-fin base, with no pale narrow interrupting lines; ocellated spot on dorsal-fin soft-rayed portion is more circular than oval, ratio of long axis/short axis of blotch 1.2-1.3 (Ref. 126057).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Matsunuma, M. and H. Motomura, 2022. Two new species of the butterflyfish genus Roa (Perciformes: Chaetodontidae). J. Fish Biol. 100(3):758-774. (Ref. 126057)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

Nicht untersucht

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02239 (0.01097 - 0.04568), b=3.01 (2.84 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.6 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Roa uejoi Matsunuma & Motomura, 2022