01-02-2011, 02:25 PM
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There is some uncertainty over the specific species of what are commonly called "horse faced" loaches. There are six species in the genus, with wide geographical distribution ranges, and some authors feel the fish available from time to time may be from more than one species. In our profiles I used the most commonly (assumed) species, and there are photos, which to me looks like your fish. But yours are young. Click on the shaded name to go to the profile.
On the gravel, if you have a horse faced loach, you should change the substrate. I had good luck with "sand" grade gravel, 1mm in size. As the fish mature they will be buried most of the day, becoming somewhat nocturnal. But not providing them with this opportunity could cause stress, leading to poor health and earl;y demise, so I would certainly change your gravel.