Danios Disappear
Hey everyone, I’m dealing with a massive vanishing act and I’m losing my mind trying to figure out what’s happening.
Three days ago, I bought 21 Zebra Danios. Today, I only count 6. On top of that, I noticed my Cardinal Tetra school dropped from 15 down to 11.
Tank Specs & Stocking:
Tank Size: 75 Gallon (Heavily planted)
Parameters: Ammonia: 0, Nitrite: 0, Nitrate: ~10-15ppm (Checked today, everything is stable and good).
Tankmates: 1 Paradise Gourami, 14 Odessa Barbs.
What I’ve checked so far:
The Floor/Surrounds: Checked all around the stand, no jumpers. Tank is hooded/covered anyway.
The Filter: Pulled the intake apart and checked the canister. No bodies, no trapped fish, no skeleton remains.
Where are they going?! Is it possible they are dying and being eaten that quickly without leaving a single trace?
I’m heavily suspecting the Paradise Gourami is going on a nighttime hunting spree, but would it really wipe out 19 small fish in 72 hours? Do Odessa Barbs get aggressive enough at night to help clean up the evidence?
Any insight or advice on what to do next would be massively appreciated. I don't want to lose the remaining ones.