Stats:
- 36G Freshwater with Cascade 700 Canister Filter
- Day 9 since setting up tank (tested during it's cycle, waited for cycle to complete, used Nutrafin Cycle and Seachem Prime)
- Day 3 since adding first fish
- Most recent: Ammonia = 0, Nitrites = 0, Nitrates = 5 (API Test Kit)
- 3 Zebra Danios (unsure of sex or age)
- No visible parasites (ich, cottony growths, change in fish color, eyes look ok, etc.)
- Did a 30% water change yesterday
- Fed the fish for the first time today (Tropical Flakes)(they went crazy for the food!)
Today for the past 5 hours 1 fish (and sometimes 2) have done something they haven't done since buying them - stayed in the corner, only wiggling enough to stay in one spot, even using their fins to swim backwards a little to stay in the corner under the plastic vegetation. These 2 are smaller than the 3rd, much larger Danio. The larger does most of the chasing/playing?, and the others do most of the getting chased.
I fed them for the first time today in the middle of that 5 hour period. All 3 have never swam faster for the food! Then the 1 smallest hid again in the corner.
I turned the light off at the end of those 5 hours, and the 2 came out from the corner almost immediately, then quickly went back to the corner, then out, then in, etc.
I've attached a couple of pictures that will hopefully help. Heck, maybe its just the bigger one is a male harassing the 2 smaller females too much?
Is this normal behavior?
