How to stop Dovii attacking the glass.....

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C

caribexr2

Feeder Fish
MFK Member
Mar 9, 2011
322
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Newcastle
My male Dovii is around the 7 - 8 " mark at the moment.

He has started attacking the glass at 1 particular point....

There does not seem to be a reflection there and I have tried putting Matte coloured backing to see if that stops him... but nope.

All day he sits and attacks it, he is getting aggitated at it and is parading around the tank before going back to attack again.

He is in an 800 litre tank with just his female for company....

Any ideas as its annoying when I am watching TV and I hear him splashing about lol
 
I know lol, but its just the one bit he is annoyed at for some reason, and since its near the top of the tank he is splashing about and its making a loud noise lol

He is VERY timid and hides as soon as he see's me move, but If i am just watching the TV he is back to biting the back of the tank.
 
stick a picture of himself blown up to twice his size, that should stop it.
 
If nothing else at least you will get a laugh out of it. I remember my younger brother found a picture of a goldfish in a magazine. And when he put it against the tank all but my gt hid away. The gt started attacking the picture. So it may go one of two ways.

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What size is your tank? Fish become glass bangers when they claim an area that extends byond the confines of their tank. Short answer is get a bigger tank maybe way bigger. My RD has an area that extends about half way into the family room so a 12 x 10 tank is out of the question, it is what it is. His tank is near the couch so if you're laying down watching TV and you move, somtimes you'll hear a loud bang as he trys to get you through the glass. I love it.
 
Fish will only see their reflection at night, when the inside of the tank is much lighter than the outside, this is the same principle behind one way mirrors used in interrogation rooms and other police stuff. You might have noticed that some fish seem shy during the day but will behave differently at night when the aquariums lights are on.

A one-way mirror, also known as a two-way mirror, one-way glass, or two-way glass is a mirror which is partially reflective and partially transparent. When one side of the mirror is brightly lit and the other is dark, it allows viewing from the darkened side but not vice versa.

The glass is coated with, or encases, a thin and almost-transparent layer of metal (usually aluminium). The result is a mirrored surface that reflects some light and is penetrated by the rest.

When one side is brightly lit and the other kept dark, the darker side becomes difficult to see from the brightly lit side because it is masked by the much brighter reflection of the lit side.
Click to expand...

All types of glass will act like one, but to a much lesser extent. If you close your apartment windows at night and turn the room lights on, you will clearly see yourself (and the room) standing behind the glass, and only a little bit of the outside world. The solution might be turning on the aquarium lights earlier in the morning and turning them off before it goes dark outside, though this might not be practical for some people that only have time to see their tanks at night.
 
The bit he is attacking is the back of the tank rather than into the room.

If I come within 2 feet of the tank at his level he will shake his head and gape at me.

I accept that they are aggressive, its just strange that the only bit of the tank he displays to is less than a foot. No where else does he do it.

I have tried putting mirrors up to see if that makes a difference and he just couldnt care less.

The tank is 800 litres with just him and a 6" female.

They killed all there babies they had when they spawned again....

I increased the flow from the filter to discourage him doing it as its near the outlet, but he is just getting more of a work out when he is doing it now lol.
 
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