Eyes lack facets and pigment. Rostrum does not extend anteriorly beyond eyes. Generally the pools were in total darkness, but T. mitchelli occurs in entrance areas that receive direct light from the surface. Substrates of the pools consisted of guano, silt, organic debris, rocks and combinations thereof. Often occurs with the more abundant T. pearsei .
Nothing is known of the life history.
Iliffe et al. The ancestor was probably a marine, coastal shrimp inhabiting low latitude seas. Central American populations were further subdivided by plate tectonics into Yucatan, Antillies and Galapagos populations. For unknown reasons, the ancestral marine populations disappeared, leaving only those species that had earlier entered the cave environment. Absence of clear morphological patterns within the recent species may be due to the early timing of isolation between and within lineages.