A partial Aqua Pets Fish and food list

I'm still trying to work out the algorithm on what fish are being fed and how much they drop.  I've had two pearls drop, but not on a reliable basis where you could say "feed this fish this particular food and 20% of the time you get a pearl."  There's a lot of fish in Aqua Pets to work through, and I'm trying several foods each day, which means it's kind of slow to get a real list.  I'm not keeping everything (I generally get rid of shrimp and crabs) -- tonight I'm trying out an "organic morsels" tank.

I'm not sure if Bionic Panda's actually figuring a weighted "rareness" factor on the food because it seems as if rare fish and common fish drop similar amounts of coinage. 

Here's the list so far of what food the Aqua Pets animals that I've fished up prefer:



LEGEND:? = unknown  (when in doubt, feed "organic morsels")
#  = Marimo
% = Chicken Nuggets
@ = Meatballs


LEGENDARY PETS@ = Jaguar Shark
% = Night Sky Angler
?  = Ninja Octopus
#  = Royal beefeater Freshwater Angelfish
?  = UFO Jellyfish


RARE FISH# = Afroranda
# = Bamboo Stalk Shark
% = Candy Angler
? = Crown Jellyfish
? = Easter Egg Batifsh
? = Emperor Angelfish
@ = Great White Shark
? = Green Baby Hippo
? = Green Boxfish
? = Innocent baby Manatee
% = Isosceles Squid
? = Ladybug Spotfish
? = Lettuce Fish
? = Manta Ray
# = Paso Doble Guppy
? = Rainbow Chromis
? = Ruffian Butterflyfish
# = White and red Dragon Betta 

UNCOMMON FISH% = Blue Ribbon Eel
% = Caribbean Reef Squid
# = Golden Arowana
# =  Green & Yellow Betta
# = Lime Green Guppy
# = Rhinogobius brunneus

COMMON FISH# =  Black & Red Koi
# = Blue & Red Betta
# =  Brown Catfish
# =  Pink Koi
# =  Red Cap Black Oranda
# =  Red Cap Pink Oranda
# =  Red Ryukin
# = Silver Arowana
# = Telescope Eye Goldfish