I've tried to make a species list of the renovated aquarium, solely with information I was able to find online. I probably won't be able to finish it, but here is a start at least.
( I will visit the aquarium in november, and will try my best to gather more information!)
Section 1: 'In the Beginning'
Drop of Water:
No living animals
Ocean Wonders:
Moon Jelly (Aurelia aurita)
Purple striped sea nettle (Chrysaora colorata)
Pacific Sea Nettle (Chrysaora fuscescens)
Atlantic Sea Nettle (Chrysaora quinquecirrha)
Black Sea Nettle (Chrysaora achlyos)
White-spotted Sea Jelly (Mastigias papua)
Cannonball jelly (Stomolophus meleagris)
Fried Egg Jelly (Cotylorhiza tuberculata)
(all species kept in a tank of their own)
Ancient Waters:
Mississippi paddlefish (Polyodon spathula)
Sterlet (Acipenser ruthenus)
Some sort of sunfish/bluegill (not signed, ID needed)
Angelfish (Pterophyllum leopoldi or scalare) (not signed, ID needs confirmation)
Royal twig catfish (Sturisomatichthys festivus)
Giant raphael catfish (Megalodoras uranoscopus)
Dwarf snakehead (Channa limbata)
Orange-spotted snakehead (Channa aurantimaculata)
Ghost catfish (Kryptopterus vitreolus) (not signed)
Australian lungfish (Neoceratodus forsteri)
Fly River rainbowfish (Melanotaenia sexlineata)
Horseshoe crab (Tachypleus gigas)
Epaulette shark (Hemiscyllium ocellatum)
Bicolor angelfish (Centropyge bicolor) (not signed)
Conquering land:
Some sort of rasbora (not signed, ID needed)
(This tank will also house Japanese giant salamanders in the future)
Axolotl (Ambystoma mexicanum)
Titicaca water frog (Telmatobius culeus)
Elephant trunk snake (Acrochordus javanicus)
Blue poison dart frog (Dendrobates tinctorius var. "Azureus")
Yellow-banded poison dart frog (Dendrobates leucomelas)
Golden poison frog (Phyllobates terribilis)
Blue-legged mantella (Mantella expectata)
Section 2: 'At the Surface'
Spirit of Exploration:
No living animals
Singapore's coast:
Silver moony (Monodactylus argenteus)
Spotted scat (Scatophagus argus) (not signed)
Ostorhinchus sp (not signed, ID needed)
Banded archerfish (Toxotes jaculatrix)
Spotted green pufferfish (Dichotomyctere nigroviridis) (not signed)
Sea horse (Hippocampus sp.) (not signed, ID needed, probably reidi or kuda)
Yellowtail clownfish (Amphiprion clarkii)
Goldtail demoiselle (Chrysiptera parasema) (not signed)
Whitetail damselfish (Dascyllus aruanus) (not signed)
Lemon damsel (Pomacentrus moluccensis) (not signed, ID requires confirmation)
Slate pencil urchin (Eucidaris tribuloides)
Blue tuxedo urchin (Mespilia globulus)
Green brittle star (Ophiarachna incrassata)
Chocolate chip starfish (Protoreaster nodosus)
Plain sand star (Astropecten indicus)
Jewelled chiton (Acanthopleura gemmata)
Tiger cowrie (Cypraea tigris) (not signed)
Elegant hermit crab (Calcinus elegans)
Cleaner shrimp (Lysmata amboinensis)
Upsidedown jelly (Cassiopea sp)
Let me know if you have any additions or corrections! I surely missed a few species
I will try to add more sections, but since there are a lot of tanks with a whole bunch of species, this might not be easy
Do you have photos of the freshwater species that you need ID help with? Interesting choice with M. sexlineata, it's not a species that's offered by their main vendor, and the one that I know that did import a few recently did not deal with them either.