Fish food organism

1
Cladocerans in fish food organisms
2
Introduction

• Commonly called water fleas.
• Popular in aqua hatcheries.
• Easily availability in nature.
• Easy adaptability to captive conditions.

3
Taxonomic position

• Phylum Arthropoda
• Class Crustacea
• Sub- class Branchiopoda
• Family daphnidae
• Species moina daphnia

4
Habitat

• Found in low saline water ponds.
• Tanks.
• sewage lagoons

5
Morphology

• Body laterally compressed.
• Enclosed in bivalve shell.
• Head is round pair of biramous antennae.
• Thorax bears five pairs.

6

• Moina measured 0.5-1.0 length 0.2-0.6.
• Daphnia measures 0.5-2.5length 0.3-1mm

7
Food feeding habit

• It feed algae.
• Bacteria.
• Fungi.
• Protozoan.
• Organic debris

8
Reproduction

• Reproduce parthenogenetically.
• Eggs are large situated b/w abdomen carapace.
• The young ones are known has cultches.

9
Culture techniques of moina

• Mass culture.
• Stock culture.

10
Enrichment

• Used food has fish shellfish.
• Omega-3 essential fatty acids.
• Vitamin C supplementation.

11
Thank you