BetaThis search tool is in development. Find out more.
Digital Images

Cavefish embryo

Dr Steve Wilson

Available online

view Cavefish embryo


Attribution 4.0 International (CC BY 4.0)
You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence.
Creative Commons Attribution (CC BY 4.0) terms and conditions

Selected images from this work

About this work


Confocal micrograph of a blind cavefish embryo at around five days post-fertilisation viewed from the side (lateral view). The cavefish Mexican tetra (Astyanax mexicanus) has a seeing and a blind form; the latter lives in dark environments, and relies on other senses. with an antibody that targets a calcium binding protein (calretinin) shown in green, which highlights different neuronal types and their processes in the nervous system. The blind cavefish has specially adapted traits that its sighted relation (dwelling near the surface) does not. These include a greater number of sensory receptors and taste buds along its body; these taste buds are also more efficient than the equivalent cells in the seeing cavefish. The eyes are still present at this stage of development but they will degenerate naturally during the lifetime of the fish as they live in a dark environment where eyes are redundant. Adult cavefish are blind. 2011 Wellcome Image Award winner. Wellcome Image Awards 2011.


Permanent link

We’re improving the information on this page. Find out more.