Peacock gudgeon fry

Beastije

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Hi guys
So a month and a half ago I bought three adult peacock gudgeons. It turned out I have two males and one female. I stocked the tank with plenty of sava pods and bamboo pipes, for them to feel comfortable, and went on with feeding and seeing them. I had both males, both at a different time, hide in the sava pods and sit on their egg clutches.
A week ago I noticed free swimming fry. Adults swim among them, no fuss. I can spot them when I am extremely patient, they always get shy when I go near, they hide. I know there are some. I dont know how many. At least 10 I assume

Given I anyway feed microworms and bbs to the adults, I just added a daily small dose of dust baby food ( hikari first bite) and all seems to work for now. I was told if the second clutch hatches, they should not be eaten by the first one, but will see.

However. The tank is 40liters. I was iffy on it supporting 3 adult peacock gudgeons. And fry? I know they grow slowly, around 5 months to like 2cm size I was told. But is it ethical for me to keep them in this volume?

I have a 54liter tank, but it has other fish and a way different filter setup (testing a HOB there) unlike the super gentle barely there sponge filter I have going on in this tank. Not sure if that would be such an upgrade.
Will attach pictures in another post.

Feedback appreciated!
 
The 40l tank
 

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The 54l is hard for me to take pictures of due to glare from the window. The hornwort is now way bigger as this is a month old photo
 

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curious if they are typical of a lot of really colorful fish, and the fry usually wash down stream to mature in the brackish / salt, waters of the mouth of their native streams???

if that is their natural cycle, (I don't know ) maybe a little aquarium salt may help the fry grow???
 
If they are I didn't find this information anywhere so I will assume that is not the case. But awaiting results of other people
 
I raised peacock gudgeon fry. I raised about 12 in a 10 gallon. When they were large enough, I sold them off.
For the first week or so, I used boiled egg yolk in a fine mesh sack, giving it a squeeze into the water. This is great for fry.
While I was using that, I started a clean infusoria culture. Then when that was ready, I stopped using the yolk and used a syringe to feed them the infusoria.
Once I felt they were big enough, I crushed up my fish food into a powder and gave them that instead. Once they grew some more I also gave them some frozen food like brine shrimp.
 
I raised peacock gudgeon fry. I raised about 12 in a 10 gallon. When they were large enough, I sold them off.
For the first week or so, I used boiled egg yolk in a fine mesh sack, giving it a squeeze into the water. This is great for fry.
While I was using that, I started a clean infusoria culture. Then when that was ready, I stopped using the yolk and used a syringe to feed them the infusoria.
Once I felt they were big enough, I crushed up my fish food into a powder and gave them that instead. Once they grew some more I also gave them some frozen food like brine shrimp.
I should add, my adult gudgeons were in a 20g aquarium at the time. I separated the fry from the adults because the adult gudgeons will eat the fry.

In fact, the best batch I did was when I immediately took out the rock from my main tank that had the eggs and placed it by water flow in my fry tank.
 

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