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Acanthuriformes (Surgeonfishes) >
Chaetodontidae (Butterflyfishes)
Etymology: rumsfeldi: Named for Donald Rumsfeld.
Eponymy: Donald Henry Rumsfeld (1932-2021) was an American politician who immortalized the quote (2002): “…there are known knowns; there are things we know we know. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin récifal; profondeur 100 - 130 m (Ref. 116443). Tropical
Western Pacific: Philippines.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 7.8 cm SL mâle / non sexé; (Ref. 116443)
Épines dorsales (Total) : 11; Rayons mous dorsaux (Total) : 20; Épines anales: 3; Rayons mous anaux: 17. This species is distinguished from its congeners by the following characters: less number of pored scales in the lateral line (27 vs. 37-46); longer snout (35.9% in HL vs. 28.2-35.5%); shorter first dorsal ray (12% in SL vs. 16.6-26.6%); longer caudal peduncle (8.5% in SL vs. 4.2-8.2%); shorter caudal fin (15.9% in SL vs. 19.8-25.9%); with a dark brown pelvic-fin spine (vs. white) (Ref. 116443).
Areas of collection vary from sheltered rocky outcroppings which are heavily covered by fine sediment to areas exposed to strong currents. Ambient seawater temperature varied between 19 and 21°C during dives conducted in April-May over several years. Azooxanthellate gorgonians, black corals, and solitary stony corals were the most abundant benthic invertebrates in this area (Ref. 116443).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Rocha, L.A., H.T. Pinheiro, M. Wandell, C.R. Rocha and B. Shepherd, 2017. Roa rumsfeldi, a new butterflyfish (Teleostei, Chaetodontidae) from mesophotic coral ecosystems of the Philippines. ZooKeys 709:127-134. (Ref. 116443)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [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).
Niveau trophique (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).