Juveniles: Hoplosternum or Dianema?

[Doras]

This is my first post so first of all: hi everyone:)
I just bought two young members of Callichytidae. They're about 1.75 inch (ca. 4cm). I spent a lot of time searching on PC and I think they're Dianema longibarbis or Hoplosternum littorale or H. punctatum. I already have one adult H. littorale and saw pictures of others at PC, but can't tell for sure what I bought since my new cats are juveniles.
Here's some pics. Any ideas?





Sorry for my english, it's not my native language.

[Silurus]

This is

Hoplosternum littorale

.

[Bas Pels]

I never saw them this small, but these fish do look meager - like they need a lot of food.

Good luck raising them

[Richard B]

Welcome to PC.

These little ones do look a bit skinny and could do with some rapid body growth. The tetra gel-based foods are particularly good foods to achieve this. (Delica, natura)

[Doras]

This is

Hoplosternum littorale

.

Thanks for identification:)

You're right, they are very skinny – make excellent representation of local pet's stores level. I bought three more just in case some of them won't survive (i want to try to breed them in the future). I feed them several times a day. I'm only afraid they may have some internal parasites...

The tetra gel-based foods are particularly good foods to achieve this. (Delica, natura)

Thanks for advice, luckily i have 'Tetra freshdelica brine shrimps' (unfortunately there is a very narrow selection of fish foods in my town), i hope they'll live and grow big and healthy.

[N0body Of The Goat]

It would be great to see how these progress, if I'm not mistaken H. littorale is a bit more of a "water current junkie" than the average "Hoplo-esque" catfish (hence the slightly forked tail).

[Doras]

I think i'll add their photos to my profile when they'll look better.
They're in quarantine (in a shrimp tank, but it's not important right now ) where it's a detectable current so they should be fine; they often swim up and down along front glass. One of the two i bought first looks much better now and seems to be bigger than the rest.
I go on holiday tomorrow, hope they'll be fat and happy when i come back.