walrechti, Sciadeichthys (Selenaspis) Boeseman [M.] 1954:60, Pl. 3 [Zoologische Mededeelingen (Leiden) v. 33 (no. 9); ref. 12263] Suriname. Holotype: RMNH 2141. Paratypes: RMNH 19808-09 (2). Type catalog: Ferraris 2007:53 [ref. 29155], •Synonym of Selenaspis couma (Valenciennes 1840) -- (Acero P. 2003:850 [ref. 26998]). •Synonym of Hexanematichthys couma (Valenciennes 1840) -- (Marceniuk & Ferraris in Reis et al. 2003:451 [ref. 27061]). •Synonym of Sciades couma (Valenciennes 1840) -- (Kailola 2004:144 [ref. 28108], Marceniuk 2005:99 [ref. 28718], Marceniuk & Menezes 2007:105 [ref. 29031], Ferraris 2007:53 [ref. 29155]). Current status: Synonym of Sciades couma (Valenciennes 1840). Ariidae: Ariinae. Habitat: freshwater, brackish, marine.