Correction to: Int Aquat Res https://doi.org/10.1007/s40071-018-0199-0

The original version of this article unfortunately contained a mistake. The captions of Figs. 1 and 2 were swapped. The corrected Figs. 1 and 2 and captions are given below:

Fig. 1
figure 1

Photomicrograph of the gill of H. diversicolor stained with H–E: a longitudinal section of gill filaments showing the afferent end (A) and efferent end (E), scale bar = 100 μm; b enlarged efferent end showing mucous-1 (M1), mucous-2 (M2) and cilia (Ci), hemocoelic space (HS) and nerve (N), bar = 10 μm

Fig. 2
figure 2

Photomicrograph of the lip of H. diversicolor stained with Hematoxylin and Eosin: a longitudinal section of folds of epithelial cells and supporting muscle, scale bar = 100 μm; b enlarged boxed fold showing mucous-1 (M1), mucous-2 (M2) and mucous-3 (M3), scale bar = 10 μm