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Posts #1 and #8 both show females with the double caudal patch. This indicates that the fish belong to the Pebas-subcomplex of the eunotus-complex. Presently 3 apisto species belong to the Pebas-subcomplex:
A. sp. Pebas - female in brood dress shows 3-4 lateral spots and a more triangular caudal patch (wide caudal spot + narrow Bar 7 spot join to form double caudal patch).
A. sp. Papagei/Nanay - female in brood dress shows 2 (rarely 3, on one side only) lateral spots and a more 'figure 8' caudal patch (wide caudal spot + equally wide Bar 7 spot join to form double caudal patch).
A. sp. Roca Eterna - female in brood dress shows 4-5 lateral spots and a more 'figure 8' caudal patch (wide caudal spot + equally wide Bar 7 spot join to form double caudal patch). They are slighly deeper bodied than A. sp. Pebas and Papagei.
Every once in a while an anomalous specimen appears without a joined caudal patch, but when examining a larger number of specimens from the same population, the typical caudal patch is the norm. I've seen this in photos before. TomC even sent me a photo of a male A. sp. Winkelfleck that he collected that shows a very atypical (for this species) double caudal patch.
A. sp. Pebas - female in brood dress shows 3-4 lateral spots and a more triangular caudal patch (wide caudal spot + narrow Bar 7 spot join to form double caudal patch).
A. sp. Papagei/Nanay - female in brood dress shows 2 (rarely 3, on one side only) lateral spots and a more 'figure 8' caudal patch (wide caudal spot + equally wide Bar 7 spot join to form double caudal patch).
A. sp. Roca Eterna - female in brood dress shows 4-5 lateral spots and a more 'figure 8' caudal patch (wide caudal spot + equally wide Bar 7 spot join to form double caudal patch). They are slighly deeper bodied than A. sp. Pebas and Papagei.
Every once in a while an anomalous specimen appears without a joined caudal patch, but when examining a larger number of specimens from the same population, the typical caudal patch is the norm. I've seen this in photos before. TomC even sent me a photo of a male A. sp. Winkelfleck that he collected that shows a very atypical (for this species) double caudal patch.