Seahorse Species Identification & Age Estimation?

[Jennfindingzen]

My new pet seahorses just arrived. I think they are juveniles, but not sure which species. I am debating between kuda or erectus.

I have them in a 12g JBJ NanoCube. One banded pipefish, one dragonface pipefish, one peppermint shrimp, 5 turbos and 6 small hermit crabs.

 

[Sniperhank]

12 gallons with 2 pipefish AND 2 seahorses? I might be missing something in the fine art of pipefish...but that sounds like to many fish per gallon to me.

 

[Sammy S]

That tank may be too small for those seahorses and pipefish o.o
I have 2 in a 29 gallon tank and another 3 in a 40 gallon with no other fish

 

[Jennfindingzen]

They seem okay right now. I am not sure whether they were wild caught or captive bred. I started off feeding them with live brine shrimp and frozen newly hatched brine. They are eating well.

I will probably try and feed them frozen mysid shirmp after. I am not sure how old they are. I got them as a Christmas gift, and was told the pet owner was uncertain either, so I am trying to figure out whether they are wild or captive.