Inle loach (Petruichthys brevis) or Rosy loach (Physoschistura mango)?

@anewbie Are the Inle loaches everywhere, and the rosies more sticking to the bottom?
The rosies so far seem to be sticking to the bottom and inle when they take off they seem to be about 6 or so inches high (the aquarium is 18 inches high); i would say both species so far when i've seen them stay in the lower 1/3 with the inle willing to swim higher level. Neither aquarium get a huge amount of eye ball time given their locations. I think i could give a better answer in a week.
 
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I would say my rosies were not really schooler/shoalers. Judging from 12-15 ft away when I could actually see them out & about, they seemed to go their separate ways for the most part. As for the "midwater" swimming, it's hard to say in such a shallow 20g long. Was it 5 inches above the substrate or 5 inches below the surface?

Based on my limited rosy experience & anewbies, I think I'd lean toward Inles...maybe just because I was disappointed with rosies...but like anewbie, not a frequently viewed tank. I would also give your Badgerling's preference some weight ;)
 
The rosies continue to be very shy and seem to always be found with other rosies, but lets be honest this is a 10 gallon aquarium and space to spread out is limited. They do stay very low - one or two inches near the bottom.

The inle loaches have spread out quite a bit but can always be found in 2s or 3s and when they do swim around 2 to 4 inches above the substrate and rarely go higher. While i cannot always immediately find them if i wait a few minutes eventually some will show up. I ordered 8 more (after all this is a 180 - 72 inches long and 30 inches wide) to see if that changes their behavior.

The tankmates are very different - in the 10 i have shrimp, 4 lampeye norms and 2 female borelli with the rosie.

In the 180 i have 2 very old male keyholes and bunch of mid size true f1 m. egregius around 1 to 2 inches in size (really pretty at this age as they have blue eyes and frequently show full markings) and 16 or 20 zebra loach (in truth i forget how many i purchased) along with a bunch of orange laser cory (some quite old). There are also a lot of tetras - mostly cardinals, red phantoms and keri or keri relative. So the 180 is quite a lot of fishes but nothing large 'cept the keyholes. I will say the zebra which is normally fairly shy fish do come rushing to the front at feeding time.

Both tanks are around 74 during the winter - the 10 will stay in that 74 range during the summer but the 180 will go up to 79. Last but least both tanks have tap water - approx tds 130.
 

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