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. Author manuscript; available in PMC: 2021 Nov 1.
Published in final edited form as: J Exp Zool B Mol Dev Evol. 2020 Feb 6;334(7-8):450–462. doi: 10.1002/jez.b.22932

Figure 5. Cavefish depart from a stereotypical pattern of infraorbital canal neuromasts and suborbital bones.

Figure 5.

Surface demonstrate a pattern of 9 infraorbital canal neuromasts (CN; 2 on the SO1–3 bones and 1 on the SO4–6 bones) in > 90% of specimens on both the right (solid gray) and left (gray stripe) sides of the face (A). A representative Chica cavefish exhibits two ectopic CN (11 total), SO3 bone fragmentation and SO4+5 fusion on the left side of the face (B). Tinaja cavefish also depart from the established pattern, with a representative individual having 5 CN, SO3 bone fragmentation, SO4+5 fusion and an absent SO6 bone (C). Additionally, Pachón cavefish also exhibit atypical patterning of CN and SO bones. The representative Pachón cavefish has 8 CN, SO3 bone fragmentation, SO4+5 fusion and an absent SO6 bone (D).