IN most, if not in all, the members of the group of Oriental fishes typified by the so-called climbing perch (Anabas scandens), the males take charge of the eggs as they are extracted from the females and place them in a “nest” of mucus-covered bubbles, which they have previously prepared. A well-known representative of the family is the “fighting fish” (Betta pugnax), which takes its name from the circumstance that a semi-domesticated breed is kept by the Siamese for the sake of the sport offered by the combats of the males. Of this fish living specimens from Pinang have recently been in the possession of Mr. E. H. Waite, of the Sydney Museum, who has published an illustrated account of their nesting habits in the Records of the Australian Museum for December last (vol. v. No. 5). Mr. Waite has obligingly sent us a copy of his original photograph of the nest, which is herewith reproduced.