Fish:

Bettas:

 Betta Fish Center
Information on Betta fish and tips on betta fish care (also known as Siamese fighting fish).

Cichlids:

Tilapia fish
Site devoted to Tilapia fish and their care.

Clown loaches are a fascinating addition to the tropical aquarium, but they do have some very specific requirements.  More information can be found here:

Loaches Online

A site about loaches of all kinds.  Also a huge loach forum.

Lung Fish must be among the oddest aquarium fish in the world

General Links Pages for Fish:

 Aquarium Fish
aquarium fish resources including information on: algae eating aquarium fish, aquarium fish behaviour, aquarium fish breeds, aquarium fish identification, aquarium fish species, aquarium fish tanks, and colourful aquarium fish.

 Aquarium Fish Supply
Free Aquarium links and info for aquarium enthusiasts.

Aquarium Guide
Keeping aquarium fish is a fun hobby and an adventure. Here are some useful tips to help you get started. Information about Freshwater Aquarium, Saltwater Aquarium and Aquarium Landscaping. Blog regularly updated.

ePet Pet Centre
Your centre for everything about pets! Browse our database of articles about pet care and health for your dog, cat, fish, bird or ferret.

The Internets Only Totally Free Classified Ad Site
Buyers can find the best deals on the net. Individual sellers have a free venue to post ads and turn their unwanted items from trash to treasure. Businesses can open new markets by posting their inventory where thousands will see it and its all FREE!

Pets, Cats, Dogs and Pet Products
Useful information on buying and looking after all your pets, from cats and dogs to rodents, reptiles, goats, horses, fish, birds, farm animals, insects and other exotic pets. All you need to know about buying pet animals and pet products

What the Pets!?
Think pets are just pets? Think again... A blog about pet news, pet funs, pet websites, pet stories... anything about pets...

Tone's Marine Aquarium Basics Set Up
Marine Aquarium Basics. Marine Aquarium Set up, How to keep yourself from getting all those head aches on Maintaining a Reef or Fish only Aquaria. Send your Marine Aquarium photo, post comments, rate Marine Aquarium products.

discus fish
Discus fish secrets - the ultimate guide to keeping and breeding discus fish. Topics include discus fish care, how to breed discus fish and sexing discus.

Live Links for Pets Online
Valuable online resource for all kinds of pets. Your one stop location for Pets.

Pet News Now
Site is dedicated to bringing up to date information on our pets. Caters to Cats and Dogs, but all pets will be covered.

Unique Fish Bowl Kits
Unique fish bowl kits with awesome aquarium decorations - sports themes, tropical scenes and more - at Funky Fish Bowls!