FIGURE 15 in Revision of Banded Knifefishes of the Gymnotus carapo and G. tigre clades (Gymnotidae Gymnotiformes) from the Southern Neotropics

FIGURE 15. Guide to the differentiation of the Gymnotus tigre and G. carapo clades on the basis of readily-apparent morphological traits (ventral lateral line ramus shape, shape of scales on anterior portion of the body and coloration of anal fin). A. Gymnotus inaequilabiatus, MCP 6956 (683 mm). B. Posterior body region of G. inaequilabiatus and G. c. australis. Note shorter, straight VLRs in G. inaequilabiatus and longer, curved VLRs in G. c. australis. C. Scales removed from posterior body regions (at about two-thirds TL, first scale row above lateral line) of G. inaequilabiatus and G. c. australis. Note the smaller and axially-elongate scales of G. inaequilabiatus. and larger, ovoid scales of G. c. australis. D. Caudal body regions of G. inaequilabiatus and G. c. australis. Note pigment speckles arranged in broken stripes on the anal-fin membrane of G. inaequilabiatus, and darkly pigmented anal-fin membrane of G. c. australis.