The lack of pigmentation causes this fish to look pink in color; its blood and internal organs are visible through the scales.

[2] The lengths of these fish typically vary from about 4 to 7 cm (1.6–2.8 in), and they move around slowly with their mouths closed.

[2] Some of the species that serve as food for G. ankaranensis are shrimps, insects, and wastes from other animals and the environment.

[2] An increase in predation when G. ankaranensis is exposed to UV light might be due to the lack of eyes and pigments.

[3] Neuromasts (sensory papillae or pit organs) are interesting adaptations that this species of fish have developed to deal with reduced vision.

[4] G. ankaranensis dark-adapted lifestyle can be supported by the widespread presence of neuromasts along the species body.

[4] Despite its small range, G. ankaranensis is not considered threatened, as it lives entirely within the Ankarana Reserve in an isolated region that is not subjected to human changes (in part because of a local fady) and its population is relatively stable.