hello EJ,
i think and only think that alot of shops will not sell to under 16's unless an adult is with them.i think its for hampsters and other animals also.
photos.
it as rob said best to have the tank brighter than the room. try photographing them with the flash turned off as the flash will often reflect off the glass tank. and flash will also frighten your fish !
some use a external flash above the tank but this is more professional stuff.
here is one i took without flash. and make sure the glass is as clean as possable inside and out.
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