My Rasbora Heteromorpha Spawned!

G

greaseball

AC Members
Jan 9, 2003
16
0
0
Visit site
My harlequin rasboras finnaly spawned in my planted tank. :D
I came home the other day and found some eggs stuck to a leaf on some rotala indica. Since yesterday they have layed tons more eggs on diffrent plants around the tank. I think the first bunch of eggs has hatched last night, but the fry are still too small for me to see.

My question is: I dont have another tank setup to rear the fry. How would I go about feeding these guys. Just wait until they can take Baby Brine Shrimp? I'm sure there's plenty of infusoria in the tank. Also, How long does it usually take for the eggs to hatch.

I'll be prepared next time! ;)
If you guys have any questions about the water parameters, I will post those a little later.
 
We'll be pumping you mercilessly for details. This is the reward for not keeping a mix of fishes.

Now don't you wish you had a bottle of vinegar eelworms? So easy to maintain, and there when you need 'em! Do you have microworms? Another easy culture to keep going in the fish cupboard.

The more tangles of Java Moss or Osmunda fiber that the adults can't penetrate, the more fry will survive.
 
hey cool..

if your temp is between 79 and 80 f. then incubation is about 48 hrs.. I am guessing your water is on the soft acid side, as I understand R.Het is unlikely to spawn in harder more alkaline water.

The young are tiny and translucent and stick to the plants unless they fall off.... and have small mouths.. I would think that if your not interested in huge numbers of them surviving..you could rely on the microfauna which must be abundant in your planted tank.. ..getting them to the point where they can take crushed flake or baby brine.

I think your main problem in the early weeks will be parental predation... but then, how many do you want?.. a few will probably make there way to adulthood without too much extra care on your part..

Congrats
 
Alright, i've got the test results.

PH- 7.1-7.2
KH- 5 dKH
GH- 18 dGH
Nitrite- .25 ppm
Ammonia- 0 ppm

I -have a heavily planted tank with DIY co2. I had turned up the co2 about two days ago, and I geuss that dropped the PH enough to trigger a spawn. They have been exhibiting spawning behavior for about two months but no eggs till last night.
The eggs were layed on TOP of the leaves of some rotal indica, alternathera, and mondo grass. There was one big bunch of eggs on the underside of a mondo grass blade. No eggs were layed on the cryptocoryne or brazil sword.

Ah ha!, as I was typing this a saw a female and male copulating, and then she layed eggs under a leaf of alternanthera, which didn't stick but fell to the substrate.:D

If there's anything I left out, just let me know.
 
Yeah, i've got snails. Ive been picking out all the ones I see with my forceps. I did a 50% water change to help clear up those nitrites.
I doubt the eggs are light sensitive, but i've subdued the lighting since I saw the first eggs. The eggs seem to be developing well.

BTW this is the first fish spawn i've ever had. :D But I dont plan on it being my last...;)
 
I had turned up the co2 about two days ago, and I geuss that dropped the PH enough to trigger a spawn.

This is a point we might make a note of. It wasn't the ideal conditions, soft tannic water, pH in the low sixes, endless summery warmth, that triggered the spawning. It was the change in conditions, with the pH dropping. Very interesting. Very interesting...

Corydoras breeders already know this trick.
 
I wonder if that would work for most tropical fishes, as the changing of the water to more ideal conditions mimicks the start of the stormy season...might be onto something?
 
You must log in or register to reply here.
AquariaCentral.com
Top Bottom