Changed Icon
Added several new mobs
New custom sounds for certain blocks and entities
Buckets now display tooltips for Variants
Variant fish from breeding (e.g. Angelfish) now have a 12.5% chance of being having a random variant instead of just being the Wild variant. (Does not have inheritance yet)
New biome called Jungle Basin (and Terrablender dependency)
Fanwort texture change
Added new blocks
Archerfish no longer look at Spiders
Volcano Snails can be bred with stone and drop raw iron
Lion's Mane Jellyfish now inflict Poison II for 3 seconds on contact and deal 1 hitpoint of damage
Added 3 new plants
Aquarist Huts now generate again
and several minor bug patches and features

Fish and Bizz adds a variety of aquarium fish among other creatures. Simulate the fishkeeping experience by breeding your fish, all the while trying to balance everything else to keep them alive. In Beta due to overhauls and experimental features