Calcaemic responses in the freshwater mud eel, Amphipnous cuchia, to vitamin D3 administration

Vitamin D₃ (1000 iu 100 g⁻¹ body wt) was administered to the freshwater mud eel, Amphipnous cuchia , which was maintained either in tap water or a calcium-rich environment. Elevation of serum calcium levels was observed after the Vitamin D₃ administration. This response was faster in the fishes which were maintained in a calcium rich environment after the vitamin D₃ administration.