Summary
This comparative morpho-histological and nutritional study of two commercially important fish species reveals that Malabar red snapper exhibits superior fatty acid profiles relative to Asian seabass, including higher PUFA/SFA and DHA/EPA ratios and a more favourable omega-6/omega-3 balance. Gastrointestinal tract structure differed between species, with Malabar red snapper showing distinctive protective mechanisms in the oesophagus and progressive goblet cell distribution along the intestine. The findings are intended to inform aquaculture practice and the nutritional characterisation of these farmed species.
Regional applicability
The study does not specify the country where the research was conducted. Transferability to United Kingdom aquaculture would depend on whether either species is farmed or consumed domestically; currently, neither is a mainstream farmed or wild-caught species in UK fisheries. The findings may be of relevance if UK aquaculture expands into tropical finfish production or if these species enter UK food supply chains through imports.
Key measures
Moisture content, crude protein, ash, essential fatty acids, PUFA/SFA ratio, DHA/EPA ratio, omega-6/omega-3 ratio; GIT morphology and histology including epithelial cell types, mucous-secreting glands, goblet cell distribution, mucosubstance staining
Outcomes reported
The study compared gastrointestinal tract morphology and fillet nutritional composition (moisture, crude protein, ash, essential fatty acids, PUFA/SFA ratio, DHA/EPA ratio, omega-6/omega-3 ratio) between Malabar red snapper and Asian seabass. Histological analysis of GIT tissues revealed species-specific differences in epithelial structure, mucous cell distribution, and glandular densities.
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