Background: I've had aquariums for probably 20 years now. Currently have a 50 gallon bow front with some real rock, and quite a few fake plants (silk ones) bordering the back of the tank.
This tank currently has about six Black Skirt Tetras, one remaining neon tetra (from an original group of 10) that is almost three years old now, one remaining Black Phantom Tetra (from an original group of six) that is also about three years old, and five gold barbs. Also one green cory.
All have been in the current tank together for quite some time, and have always been active. Starting about six weeks ago, they all started hiding in the plants, except the one neon, who cruises around everywhere. They now only come out when the tank is dark, and will scramble for cover if the tank light is on and anyone comes near.
I've changed nothing about the tank, the lighting, etc. Any ideas why they have all gone into witness protection all of the sudden? And help, ideas, or advice welcome, and thanks!
This tank currently has about six Black Skirt Tetras, one remaining neon tetra (from an original group of 10) that is almost three years old now, one remaining Black Phantom Tetra (from an original group of six) that is also about three years old, and five gold barbs. Also one green cory.
All have been in the current tank together for quite some time, and have always been active. Starting about six weeks ago, they all started hiding in the plants, except the one neon, who cruises around everywhere. They now only come out when the tank is dark, and will scramble for cover if the tank light is on and anyone comes near.
I've changed nothing about the tank, the lighting, etc. Any ideas why they have all gone into witness protection all of the sudden? And help, ideas, or advice welcome, and thanks!