This app was removed from the App Store.
iOS iPhone Reference
Aquarium Hitchhikers contains common and not so common hitchhikers that are found in live rock, sand, and other items added to aquariums with images descriptions and the concerns you should have if you find them in your tank.
Aquarium Handbook Complete
Aquarium Handbook Complete contains the full collection of aquarium programs which are the following : Marine Aquarium Fish, Freshwater Aquarium Fish, Brackishwater Aquarium Fish, Corals, Marine Aquarium Invertebrates, Freshwater Aquarium Invertebrates, Brackishwater Invertebrates, Marine Aquarium Plants, Freshwater aquarium and pond Plants, Brackish Water Plants, In Large Aquarium and Nature, State Fish, Tank Samples .... And Lots More This application also contains things not available in other applications and will continue to grow at no extra charge.