«Despite this short time span, the fish show trademark adaptations to cave life compared
with loaches from surface locations nearby, including a pale body colouration, much smaller eyes, plus larger nostrils and barbels,» she says.
Not exact matches
The pale, tiny fish
with long, whiskerlike barbs sprouting from its head (above) is a new species of
loach, as yet unnamed.
This family of
loaches, sometimes called sting -
loaches, is found in Eurasia and Morocco and has about 28 genera
with about 236 species (Berra The evolution of tetrapods began about 400 million years ago in the Devonian Period
with the earliest tetrapods evolved from lobe - finned fishes.
For example, spiny eels, freshwater stingrays and many
loaches love to burrow in the substrate, so their tanks are best outfitted
with fine sand - like gravel.
For example: tetras, barbs, danios, rasboras, catfish and
loaches are all Ostariophysian fishes
with certain internal structures in common.