Eleotris

Mennesson, Marion I. & Keith, Philippe, 2020, Eleotris (Teleostei: Eleotridae) of the Indian Ocean: an overview with the description of three new species, Cybium 44 (3), pp. 185-203 : 202

Key of Eleotris species from the West Indian Ocean

1-a. – Cephalic neuromast pattern ‘closed; ‘2.4.6’ ....... 2

1-b. – Cephalic neuromast pattern ‘open; ‘2.4’ .......... 3

1-c. – Cephalic neuromast pattern ‘closed; ‘2.3.4’ ....... 6

2-a. – Transverse scales in forward series in males 18-30 and females 22-28............ Eleotris klunzingerii ( Fig. 10 )

2-b. – Transverse scales in forward series in males 13-22 and females 13-25............ Eleotris fusca (very rare in the West Indian Ocean) ( Fig. 11 )

3-a. – Presence of ‘teeth’ in the vomer........................................ Eleotris vomerodentata ( Fig. 4 )

3-b. – Absence of ‘teeth’ in the vomer................. 4

4-a. – Pectoral rays 16-17, predorsal scales 30-42................................ Eleotris acanthopoma ( Fig. 9 )

4-b. – Pectoral rays 15, predorsal scales 26-34.......... 5

5-a. – Head length 30-32% SL, zigzag scales 10.............................. Eleotris sahanaensis n. sp. ( Fig. 5 )

5-b. – Head length 31-37% SL, zigzag scales 10-12.................................. Eleotris pellegrini ( Fig. 3 )

6-a. – Lateral scales 50-56, zigzag scales 12-13....................................... Eleotris soaresi ( Fig. 6 )

6-b. – Lateral scales 59-69, zigzag scales 13-15......... 7

7-a. – Pectoral rays 16, predorsal scales 36-38................................... Eleotris diamsoi n. sp. ( Fig. 7 )

7-b. – Pectoral rays 18, predorsal scales 45-50................................... Eleotris valadei n. sp. ( Fig. 8 )

Figures

Figure 3. – Eleotris pellegini, Grand St Louis River, Mahe, Sey- chelles Islands (tag 12592) (© M.I. Mennesson, P. Keith).

Figure 5. – Eleotris sahanaensis n. sp., Sahana River, Madagascar (tag 13003) (© M.I. Mennesson).

Figure 6. – Eleotris soaresi, in Playfair and Günther, 1867.

Figure 7. – Eleotris diamsoi n. sp., Ankazofotsy, Madagascar (© P. Keith).

Figure 8. – Eleotris valadei n. sp., MNHN-IC-2020-0065, paratype, Nouvelle-Découverte River, Praslin, Seychelles Islands (tag 12584) (© M.I. Mennesson, P. Keith).

Figure 9. – Eleotris acanthopoma,Athanas River, Mahe, Seychelles Islands (© P. Keith).

Figure 10. – Eleotris klunzingerii, Reunion Island (© E. Vigneux).

Figure 11. – Eleotris fusca, Rarotonga, Cook Islands (© P. Keith).

Figure4.– Eleotris vomerodentata, holotype MNHN-IC-1984-0803 (© M.I. Mennesson).