240.75 Paragobiodon lacunicolus
(Kendall & Goldsborough, 1911)
Blackfin goby
Swartvin-dikkop
Ruppel/ia lacunicola Kendall & Goldsborough , 1911 : 318, PI. 6, Fig. 1
(Fakarava, Paumotu Ids., Pacific). Paragobiodon echinocephalus (non
Riippel\): Smith, 1959: 218 (in part).
D VI+ 1,9; A 1,8; P 21 ; LS 21-23 ; TRB 8-9.
Head reddish orange to orange; body tan. Attains 3 cm.
Indo-Pacific.
240.75 Paragobiodon lacunicolus: 2 em (after Kendall & Goldborough, 1911).
240.76 Paragobiodon modestus
(Regan, 1908)
PLATE 124
Wart head goby
Vrat-dikkop
Gobiopterus modestus Regan , 1908: 242 (Chagos Archipelago) .
Paragobiodon echinocephalus (non Riippe\l) : Smith, SFSA No. 908*;
1959: 218' (in part); 1960: 313 .
D VI+I ,9; A 1,9; P 19-23; LS 22-24; TRB 8-9.
Associated with the branching coral Pocillopora. Attains
3.5 cm . Indo-West Pacific, south to Inhaca.
240.76 Paragobiodon modestus: 2.5 em (Inhaea Id.).
240.77 Paragobiodon xanthosomus
(Bleeker, 1852)
Emerald goby
Smarag-dikkop
Gobius xanthosoma Bleeker, 1852: 703 (Wahai, Ceram) . Paragobiodon echinocephalus (non Riippe\l) : Smith, 1959: 218 (in part).
D VI+I ,9; A 1,9; P20-22; LS 22-24; TRB 9.
Head and body green to greenish yellow; C often with a
dark margin. Associated with the coral Seriatopora hystrix.
Attains 4 cm. Indo-West Pacific.
240: GOBIIDAE (GOBlES)
240.77 Paragobiodon xanthosomus: 2.5 em (Kenya).
Genus Periophthalmus Bloch & Schneider, 1801
Eyes protruding, with lower eyelid; P base elongate; one
row of teeth in upper jaw; gill opening less than P base;
tongue adnate. V separate, partly or completely united.
Head pores absent; cheek papillae reduced. Scales ctenoid
or cycloid. Easily confused with the extralimital Periophthalmodon, which has 2 rows of teeth in upper jaw. Several
species; found in tropical muddy habitats, especially among
mangroves, spending considerable time out of water. One
or 2 species in our area (separation of species tentative).
KEY TO SPECIES
1a V completely separate , no frenum; 1st D spines
7-15; fin height greater than length of base .. P. koelreuteri africanus
Ib V partly connected, frenum low; 1st D spines
14-17; fin base longer than height ... ... ... .. ........... .... ... P. sobrinus
240.78 Periophthalmus koelreuteri africanus
Eggert,1935
African mud hopper
Afrikaanse modderspringer
Periophthalmus koelreuteri africanus Eggert, 1935: 78, PI. 5, Fig. 21
(Zanzibar) ; Smith, 1959: 219'; 1961: 570, No. 936a.
D VII-XV+I,IO-12; A 1,9-10; P 12-13. First D widely separate from
second, particularly in juvenile.
Dusky; both D with a white edge and a dark band below.
Attains 9.5 cm. Seychelles, Kenya to Transkei.
240.78 Periophthalmus koelreuteri afrieanus: 6.5 em (N . Mozambique).
240.79 Periophthalmus sobrinus
Eggert, 1935
Bigfin mud hopper
Grootvin-modderspringer
Periophthalmus sobrinus Eggert, 1935: 95 , PI. 9, Figs. 37,38 (Red Sea) ;
Smith, 1959: 220'; 1961 : 570, No. 936; Stebbins & Kalk , 1961 : 18.
Periophthalmus cantonensis: Smith, SFSA No. 936*.
799
(Kendall & Goldsborough, 1911)
Blackfin goby
Swartvin-dikkop
Ruppel/ia lacunicola Kendall & Goldsborough , 1911 : 318, PI. 6, Fig. 1
(Fakarava, Paumotu Ids., Pacific). Paragobiodon echinocephalus (non
Riippel\): Smith, 1959: 218 (in part).
D VI+ 1,9; A 1,8; P 21 ; LS 21-23 ; TRB 8-9.
Head reddish orange to orange; body tan. Attains 3 cm.
Indo-Pacific.
240.75 Paragobiodon lacunicolus: 2 em (after Kendall & Goldborough, 1911).
240.76 Paragobiodon modestus
(Regan, 1908)
PLATE 124
Wart head goby
Vrat-dikkop
Gobiopterus modestus Regan , 1908: 242 (Chagos Archipelago) .
Paragobiodon echinocephalus (non Riippe\l) : Smith, SFSA No. 908*;
1959: 218' (in part); 1960: 313 .
D VI+I ,9; A 1,9; P 19-23; LS 22-24; TRB 8-9.
Associated with the branching coral Pocillopora. Attains
3.5 cm . Indo-West Pacific, south to Inhaca.
240.76 Paragobiodon modestus: 2.5 em (Inhaea Id.).
240.77 Paragobiodon xanthosomus
(Bleeker, 1852)
Emerald goby
Smarag-dikkop
Gobius xanthosoma Bleeker, 1852: 703 (Wahai, Ceram) . Paragobiodon echinocephalus (non Riippe\l) : Smith, 1959: 218 (in part).
D VI+I ,9; A 1,9; P20-22; LS 22-24; TRB 9.
Head and body green to greenish yellow; C often with a
dark margin. Associated with the coral Seriatopora hystrix.
Attains 4 cm. Indo-West Pacific.
240: GOBIIDAE (GOBlES)
240.77 Paragobiodon xanthosomus: 2.5 em (Kenya).
Genus Periophthalmus Bloch & Schneider, 1801
Eyes protruding, with lower eyelid; P base elongate; one
row of teeth in upper jaw; gill opening less than P base;
tongue adnate. V separate, partly or completely united.
Head pores absent; cheek papillae reduced. Scales ctenoid
or cycloid. Easily confused with the extralimital Periophthalmodon, which has 2 rows of teeth in upper jaw. Several
species; found in tropical muddy habitats, especially among
mangroves, spending considerable time out of water. One
or 2 species in our area (separation of species tentative).
KEY TO SPECIES
1a V completely separate , no frenum; 1st D spines
7-15; fin height greater than length of base .. P. koelreuteri africanus
Ib V partly connected, frenum low; 1st D spines
14-17; fin base longer than height ... ... ... .. ........... .... ... P. sobrinus
240.78 Periophthalmus koelreuteri africanus
Eggert,1935
African mud hopper
Afrikaanse modderspringer
Periophthalmus koelreuteri africanus Eggert, 1935: 78, PI. 5, Fig. 21
(Zanzibar) ; Smith, 1959: 219'; 1961: 570, No. 936a.
D VII-XV+I,IO-12; A 1,9-10; P 12-13. First D widely separate from
second, particularly in juvenile.
Dusky; both D with a white edge and a dark band below.
Attains 9.5 cm. Seychelles, Kenya to Transkei.
240.78 Periophthalmus koelreuteri afrieanus: 6.5 em (N . Mozambique).
240.79 Periophthalmus sobrinus
Eggert, 1935
Bigfin mud hopper
Grootvin-modderspringer
Periophthalmus sobrinus Eggert, 1935: 95 , PI. 9, Figs. 37,38 (Red Sea) ;
Smith, 1959: 220'; 1961 : 570, No. 936; Stebbins & Kalk , 1961 : 18.
Periophthalmus cantonensis: Smith, SFSA No. 936*.
799