Mystery fry... again.

I had mystery fry in March, and now that happended again. This time thoug they are not goldfish, I would recognice them now. I have a few of these:




They are around 1cm long, seem to be suckeres, and stocking list is as follows:

Goldfishes, 6 months old ones. These are def. not goldfish.
Hillstream loaches, 8 of them, bought late summer.
2 Otos, perhaps 1.5 years old
Guppies, but these guys are not them.
All my livestock and plants were in my 20 litre tank for 2 weeks since my 150 litre tank had a leak, till before I got my new 250 litre tank. I got all fish back to large tank around 2 weeks ago. In my small tank with fry are only shrimps, snails and 3 mussels, so they are safe. But what fry do I have this time?

Edit: I also do have yoyo loaches, but these don't remind them, I think.

 

I can’t really tell because no offense but the picture is really bad quality but it looks like it could be hillstream loach

 

No offence taken, they are tricky to catch with camera. It would be brilliant if they would be hillstreams, are they easy to breed on purpose? I'm thinking about taking female and male to small tank, and letting them live there, since they are peaceful enough with shrimps.

 

Yeah breeding them is quiet rare just like with lots of other loaches but I’m not 100% sure so I wouldn’t get your hopes to high yet

 

They look like otocinclus fry but I could be wrong. FinsandWhiskers might be able to help you if they are otos
But they could also be hillstreams. Which of the 2 does their behaviour reassemble most?

 

I think they are hillstream loach fry

 

They behave more like hillstreams. If I get a pair of hillstreams to my shrimp tank, would they be likely to breed, or do they need to be a certain breeding pair?

 

Among the species you listed, hillstream loach is the most likely (Having a group of 8, and they are known to breed behind filters, etc). Unless you are positive those two otocinclus are a pair, it is unlikely to be an otocinclus. (Besides, at 1 cm, it should be recognizable as an oto). It looks like a Yo Yo, but that would be probabilistically like winning the lottery.

 

Heh, I've never been so lucky... It'll be interesting to see how they grow up.

 

All three species are very hard to breed... I can't wait to see what those cuties are!

 

Otocinclus are difficult to breed. In the hobby, many of the fish available for sale are wild caught. If these are Otos, congratulations.

I do not know enough about hillstream loaches to comment. I have never kept them.

 

That is definitely a Hillstream Loach. Depending on the species, some Hillstream Loaches aren't that difficult to breed. The young don't take on the patterns of the adults until they are quite large. Separating a pair is not a good way to breed the Loaches, they do much better as a group.

Mine were placed in a tank with a powerhead on a sponge filter to provide current. Then I piled up flat pieces of slate and stone, as they like to put the eggs in the spaces between the rocks. I saw no evidence of adults eating young. However, you have multiple species in the tank, and the other fish could be a danger.