Stream feeding relationships
NOTE: Different streams and rivers will have different combinations of plants and animals living there.
Plant eaters
|
Herbivores
|
What they eat
|
| Mayfly | Algae |
|
Water snail
|
Algae, leaves
|
Animal eaters
| Carnivores |
What they eat
|
|
Backswimmer
|
Larvae
|
|
Dobson fly
|
Larvae
|
|
Damsel fly
|
Insects, larvae
|
|
Water spider
|
Water boatman, backswimmer
|
|
Eel (young)
Eel (adult)
|
Macro invertebrates
Fish, ducklings
|
|
Inanga
|
Insects, larvae
|
|
Banded kokopu
|
Insects , larvae
|
|
Redfin bully
|
Larvae, snails, crustaceans
|
|
Upland bully
|
Larvae
|
|
Common bully
|
Larvae, small fish, crustaceans, molluscs
|
|
Trout (young)
Trout (adult)
|
Larvae
Young eels, shrimps, bullies
|
|
Kingfisher (kōtare)
|
Fish (e.g. young trout and eels, bullies), shrimps
|
|
Fantail (pīwakawaka)
|
Flying insects (e.g. Dobson Fly, Mayfly, Sandfly)
|
|
Blue duck (whio)
|
Aquatic insects such as Caddis fly, Stonefly and Mayfly
|
|
Cat
|
Birds, rats
|
Others
| Omnivores & scavengers |
What they eat
|
|
Bacteria
|
Dead plants and animals
|
|
Water boatman
|
Algae, larvae
|
|
Flatworm
|
Algae, dead animals
|
|
Water flea
|
Algae, dead animals
|
|
Bloodworms
|
Dead plant and animal matter
|
|
Cased caddis fly nymphs
|
Dead plant material
|
|
Net-building caddis fly nymphs
|
Floating plant material, algae, small invertebrates
|
|
Stoneflies
|
Larvae, algae
|
|
Shrimps
|
Dead animals
|
|
Fresh water crayfish (koura)
|
Aquatic plants, invertebrates, dead plant and animal matter
|
|
Koi carp
|
Plants, insects, young fish
|
|
Mallard ducks
|
Aquatic plants, land plants (e.g., grass), insects, plankton, snails
|
|
Rat
|
A wide range of plant and animal matter including water spiders, ducklings, dead animals, berries, and seeds
|
NOTE: Omnivores eat plants and animals. Scavengers eat dead plant and animal material.