Figures 21-29 from: Senarat S, Kettratad J, Kaneko G, Kamnurdnin T, Sudtongkong C (2020) The microanatomy of the central nervous system and brain of the Indo-Pacific seahorse, Hippocampus barbouri, during development. Zoologia 37: 1-11. https://doi.org/10.3897/zoologia.37.e53734

Figures 21-29 The diencephalon of Hippocampus barbouri at 35 DAB. (21) The diencephalon was subdivided into epithalamus (Ep), thalamus (Ta) and hypothalamus (Hy). (22) The pineal gland (Pn) contained blood vessels (Bv), pinealocytes (Pc) and neuroglia (Ng). (23) Habenula ganglion (Hb) was surrounded by a thin layer of connective tissue (CNT). It contained neurons (Nu) and neuroglia (Ng). (24) The Ta contained different cells including neurons (Nu) and neuroglia (Ng). Neuronal fibers (Nf) were also present. (25, 26) Several important regions of the hypothalamus including nucleus periventricularis (Np) and nucleus tuberalis lateralis (Nlt). (27) Two regions in the pituitary gland (Pg) included the neurohypophysis (Np) and the adrenohypophysis (Ap). (28–29) The succus vasculosus (Sv) was surrounded by the epithelium (Ep). Bv = blood vessel, Cc = coronet cell, Nu = neuron, Su = supporting glial cell. Scale bars: 22, 27, 28, 29 = 20 µm, 23, 24, 25, 26 = 50 µm.