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Family Lobotidae — Tripletails
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Lobotes pacificus Gilbert, 1898. Pacific Tripletail. To 110 cm (43.3 in) TL (Carpenter in Carpenter 2003).
Circumglobal; in western Pacific as far north as Japan (Hatooka in Nakabo 2002) and southern Kuril
Islands (Savinykh 1998); in eastern Pacific from San Pedro Breakwater, southern California (Rounds
and Feeney 1993) to Chimbote, Peru (Beltrán-León and Rios Herrara 2000). Bays, brackish estuaries,
coastal freshwaters, and sometimes well out to sea around floating objects (Allen and Robertson 1994).
Considered by some authors a junior synonym of Lobotes surinamensis (Bloch, 1790).
Family Gerreidae — Mojarras
Diapterus peruvianus (Cuvier, 1830). Peruvian Mojarra or Shortsnout Mojarra. To 38 cm (15.0 in) TL
(Amezcua Linares 1996). Bahia Magdalena, southern Baja California (De La Cruz-Agüero et al. 1994)
to Caleta La Cruz, Peru (Chirichigno and Vélez 1998), including lower and central Gulf of California
(Robertson and Allen 2002) and Islas Galápagos (Grove and Lavenberg 1997). Surface to 104 m (341 ft)
(min.: Robertson and Allen 2002; max.: Amezcua Linares 1996); also in estuaries and lower parts of
streams (Allen and Robertson 1994).
Eucinostomus currani Zahuranec, 1980. Blackspot Mojarra, Flagfin Mojarra, Pacific Flagfin Moharra, or
Spotted-fin Mojarra. To at least 21 cm (8.3 in) TL (Robertson and Allen 2002). Anaheim Bay, southern
California (Bussing in Fischer et al. 1995) to Huacho, Peru (Chirichigno and Vélez 1998), including
Gulf of California (Bussing in Fischer et al. 1995), Islas Galápagos (Grove and Lavenberg 1997), and Isla
Cocos (Robertson and Allen 2002). The Eucinostomus sp. of Miller and Lea (1972) refers to this species
(Nelson et al. 2004). Intertidal area (SIO 71-51) and to 100 m (328 ft; Amezcua Linares 1996), and
freshwater streams (Allen and Robertson 1994).
Eucinostomus dowii (Gill, 1863). Dow’s Mojarra, Pacific Spotfin Mojarra, or Silver Mojarra. To 20 cm
(7.9 in) TL (Amezcua Linares 1996). Camp Pendleton Harbor (SIO 76-191), southern California to
Gulf of California (De La Cruz-Agüero et al. 1997) and to Peru (Allen and Robertson 1994). Shallow
bays and estuaries; tidepools and to 114 m (3–374 ft) (min.: Thomson and Lehner 1976; max.: Amezcua
Linares 1996). We follow Nelson et al. (2004) in treating Eucinostomus argenteum records from the
Pacific Ocean as E. dowii.
Eucinostomus entomelas Zahuranec, 1980. Blackgill Mojarra, Black-spot Mojarra, or Darkspot Mojarra. To
24 cm (9.5 in) TL (Robertson and Allen 2002). From 4.8 km (3 mi) east of the entrance to Laguna Ojo
de Liebre (27°54'N, 114°18'W), central Baja California (SIO 52-141) to northern Peru (Chirichigno and
Vélez 1998), including southern and central Gulf of California (Robertson and Allen 2002). At depths
of 0–100 m (328 ft) (min.: Robertson and Allen 2002; max.: Amezcua Linares 1996).
Eucinostomus gracilis (Gill, 1862). Graceful Mojarra or Slender Mojarra. To 23.9 cm (9.4 in) TL (Amezcua
Linares 1996). Bahia de Ballenas, southern Baja California (Zahuranec 1967) to northern Peru
(Chirichigno and Vélez 1998), including southern Gulf of California (Bussing in Fischer et al. 1995)
and Islas Galápagos (Grove and Lavenberg 1997). Mangrove estuaries (Allen and Robertson 1994) and
coastal freshwaters (Bussing in Fischer et al. 1995); in ocean, surface and at depths of 1–112 m (3–367 ft)
(min.: Gonzáles-Acosta et al. 1999; max.: Amezcua Linares 1996). Eucinostomus californiensis (Gill, 1862)
and E. gracilis are synonymous. The name E. californiensis was selected as the correct name by Jordan
and Evermann (1898) but this has been largely overlooked and E. gracilis is the name usually seen. The
current edition of the International Code of Zoological Nomenclature (ICZN 1999) allows continued use
of the name E. gracilis, rather than introduce instability in nomenclature by not maintaining current
usage.