The Mexican blind cavefish does not have eyes, but it can “see” obstacles in dark caves by puckering its mouth and producing bursts of suction, according to a new study. In fact, larger fish detected objects at about the same distance as smaller fish did. …

Do cave fish use echolocation?

Sending their navigational pulses through the water, blind cavefish are perhaps more similar to echolocating whales and dolphins than to bats. Yet this ability might not be as special as it seems.

What adaptation do cave fish have?

Cavefish adaptations include constructive traits, such as more taste buds and cranial neuromasts, increased olfactory capacity, and fat deposits, which facilitate feeding and survival during times of low food input, and regressive traits, such as decreased metabolic rates and loss of eyes, which may be important in …