Does lighting make fish act differently? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 2 Old 04-20-2009, 10:04 AM Thread Starter
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mags2313's Avatar
Does lighting make fish act differently?

Just yesterday I changed the lighting on my 32gal tank, It is much brighter now and much better for my plants.
And I noticed right away all of my fish acting differently. My Red Eye Tetras are no longer hanging out in the top corner and they go into the middle of the tank now, and same with my zebra loaches, they swim around more and check out the middle of the tank more.
What's up with this??

My 5foot, 56g Tank
2 Madagascar, 2 Bosemi and 1 Millenium Rainbowfish
9 Tiger Barbs
1 Weater Loach, 6 Zebra Loaches
1 Rainbow Shark
1 Raphael Catfish
My 55g
1 Siamese Algae Eater
11 Otocinclus
4 Burmese Zebra Loaches
1 Black Angelfish
1 Banjo Catfish
Lots of shrimp
My 70g
1 Siamese Algae Eater
4 Peppered Corydora, 1 Green Corydora
2 Wood Shrimp
3 Red Eye Tetra
1 Raphael Catfish
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post #2 of 2 Old 04-20-2009, 10:21 AM
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If the change was significant the fish may have to adjust. Floating plants will make them feel more secure, but that reduces the light getting to the lower rooted plants, so you have to balance. What exactly is the lighting (watts, type) and how long is it on.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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