Producers:

Question

Producer 1: Corals
Producer 2: Algae
Producer 3: Seagrasses
Producer 4: Mangroves

Primary Consumers:
Primary Consumer 1: Herbivorous Fish
Primary Consumer 2: Zooplankton
Primary Consumer 3: Sea Urchins
Primary Consumer 4: Gastropods

Secondary Consumers:
Secondary Consumer 1: Moray Eel
Secondary Consumer 2: Barracuda
Secondary Consumer 3: Stingray
Secondary Consumer 4: Sea Turtles

Tertiary Consumers:
Tertiary Consumer 1: Shark
Tertiary Consumer 2: Giant Trevally
Tertiary Consumer 3: Moray Eel
Tertiary Consumer 4: Dolphins

Decomposers:
Decomposer 1: Bacteria and Fungi
Decomposer 2: Detritivores
Decomposer 3: Crustaceans
Decomposer 4: Polychaete Worms

Answer 1

Decomposer 5: Sponges

Answer 2

there is no 5

Answer 3

Apologies for the incorrect numbering. Here is the revised list:

Decomposers:
Decomposer 1: Bacteria and Fungi
Decomposer 2: Detritivores
Decomposer 3: Crustaceans
Decomposer 4: Polychaete Worms
Decomposer 5: Sponges