Update 1.5 More fish!

Add 10 new fish species or aquatic organisms to the game.

• Crocodile
• ​​Guppy
• European Bream
• Arapaima
• Pond Turtle
• Red-eared Slider
• Softshell Turtle
• Stygian Jellyfish
• Sea Snail
• Giant Clam

Also, some minor bugs have been fixed.