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Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Chaetodontidae (Butterflyfishes)
Etymology: Johnrandallia: After John Randall, marine biologist, Bishop Museum of Hawaii; he worked in systematic ichthyology with fishes of Indopacific region.

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 6 - 40 m (Ref. 9286), usually 6 - 12 m (Ref. 9286). Tropical, preferred ?; 40°N - 10°S, 120°W - 70°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Pacific: Gulf of California to Panama, including the Cocos, Malpelo and Galapagos Islands.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 20.0 cm TL male/unsexed; (Ref. 9286); common length : 14.0 cm TL male/unsexed; (Ref. 55763)

Short description Morphology | Morphometrics

Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 24-25; Anal spines: 3; Anal soft rays: 18 - 20. Body deep, compressed, and disk-shaped; dorsal profile of head steep and concave; snout pronounced; teeth very small and se in a comb-like band; base of pelvic spine with an axillary process; lateral line complete, extending over caudal peduncle; body yellowish; snout with a dark stain; eye bordered with black; posterior edge of operculum, base of pectoral fins, nape, and dorsal border (at base of dorsal fin) black (Ref. 55763).

Often in large schools (Ref. 5227) over coral and rocky reefs (Ref. 9286). Feed on algae, gastropods, and small crustaceans (Ref. 9286). Pick parasites from larger fishes like Paranthias colonus and Mulloides dentatus (Ref. 28023). Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Form pairs during breeding (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

Schneider, M., 1995. Chaetodontidae. Peces mariposa. p. 1000-1003. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9286)

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Aquarium: commercial

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02754 (0.01654 - 0.04586), b=3.09 (2.94 - 3.24), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic Level (Ref. 69278): 3.0 ±0.44 se; Based on food items.

Resilience (Ref. 69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Vulnerability (Ref. 59153): Low vulnerability (15 of 100) .

Entered by Agustin, Liza Q.

Modified by Luna, Susan M.

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