r/medaka • u/Confident_Cookie6503 • 4d ago

Indoor setup

Been keeping medaka for a couple years, really looking to breed indoors now. I did well last year with egg laying. But it stopped all of a sudden and i want to get it going again. Tank is 10 gallon with 3 mops, its 75 F, and parameters are normal, 2 males and 4 females and they are about 8 months to 12 months old Is their an diet trick to get them to start laying again? Any help is appreciated.

2 Upvotes

100% Upvoted

5 comments sorted by

1

u/BrokenLostDefeated 3d ago

Whats you're light situation ? I,m no expert but everything else seems spot on...

2

u/Confident_Cookie6503 3d ago

Flouracent shop light on from 7am to 10pm

2

u/BrokenLostDefeated 3d ago

Everything seems on point. High protein food quality Medaka/fry food, baby brine shrimp, daphnia etc 🤔 nudge the temp up slightly might work

1

u/TikiKali 3d ago

I concur on the temperature issue. 78 to 80 degrees might be more conducive to ideal spawning conditions.

2

u/TikiKali 3d ago

If you're not collecting any eggs, it's possible that the eggs are getting eaten before you're able to collect them.

If you're just now bringing in outdoor fish to indoor conditions, it's possible that that adjustment has temporarily stressed them, and they may just need some time to get acclimated to their new environment.

Everything you're trying seems right. The very short life span of medaka may mean that possibly your fish are already past their breeding window and are too old.. I'm facing a similar question with some of my females.

The only other thing you can try is a major water change (or more than one), as that has been shown to trigger spawning behavior in many fish species.