finally found where Irene aquarium is. Turned out its just very near the route i used to take when wanting to skip federal highway traffic jam.
They really do have lots of fish. They even have a pair of pacman frogs (1st time see in front of my own eyes). The varieties of fish and exotic pets are a lot, but im not that very confident on how they treat them.

not sure. depends on what you want to buy. i cannot comment much because i've just been there once and bought two marble angle fish. sad to say, both of them died within one to two weeks (bringing along all my other angel fishes).    i do see that a lot of forum members here go there. not sure to buy what though