1) Hatooka, K. and T. Yoshino. 1982. Moray eels (Pisces, Muraenidae) in the collection of the University of the Ryukyus. Galaxea, 1: 87-109.
2) Hatooka, K. 1984. Muraenidae, pages 22-26, 338, pls.25-29, 338 in Masuda et al. eds. The fishes of the Japanese Archipelago. Tokai Univ. Press., Tokyo.
3) Hatooka, K. 1984. Uropterygius nagoensis, a new muraenid eel from Okinawa, Japan. Japan. Jour. Ichthyol., 31(2): 20-22.
4) Hatooka, K. 1986. Sexual dimorphism found in teeth of three species of moray eels. Japan. Jour. Ichtyol., 32(4): 379-386.
5) Hatooka, K. T. Yoshino, H.Senou and K.Yano. 1986. The forth garden eel (Pisces, Congridae, Heterocongridae) from Japan. Galaxea, 5:255-259.
6) Hatooka, K. 1988. New record of the moray Gymnothorax pindae from the Amami Islands, Japan. Japan. Jour. Ichthyol., 35(1): 87-89.
7) Hatooka, K., K. Matsuura and M. Aizawa. 1990. First record of the moray eel Enchelycore bayeri from Japan. Mem. Natn. Sci. Mus., Tokyo, (23): 119-122.
8) Hatooka, K. and Randall, J.E. 1992. A new moray eel (Gymnothorax: Muraenidae) from Japan and Hawaii. Jpn. J. Ichthyol. 39(3): 183-190.
9) Hatooka, K. , H. Senou and M. Aizawa. 1992,. New records of the moray Echidna rhodochilus (Muraenidae, Anguilliformes) from Japan and Fiji Islands. I.O.P. Diving News., ３(４):2-3. (in Japanese with English abstract)
10) *Hatooka,Ｋ. 1993. Keys and and taxonomical notes on Aguillidae, most of Superorder Squalea (sensu Shirai, 1992), Zoarcidae, Stichaeidaekeys and so on, 63 families and ca.450 species, in Nakabo, T. ed. Fishes of Japan with pictorial keys to the species. Tokai Univ. Press, Tokyo. (in Japanese)
11) Hatooka, K. and A. Iwata, 1993. First record of Gymnothorax zonopectis from Japan (Pisces: Muraenidae). Bull Osaka Mus Natr. Hist., (47): 19-24.
12) Hatooka, K. T. Suzuki and M. Hosokawa, 1994. Record of false scorpionfish Centrogenys vaigiensis from Japan.I.O.P. Diving News., 5(10):2-3. (in Japanese with English abstract)
13) Hatooka, K. 1995. First record of an ophichthid eel Apterichthus flavicaudus (Snyder) from Izu Oceanic Park. I.O.P. Diving News., 5(10):2-3. (in Japanese with English abstract)
14) Hatooka, K., T. Yoshino and A Ono. 1995. A rare ophichthid eel, Ichthyapus vulturis, from Izu Peninsula, Japan (Pisces: Ophichthidae). Bull. Osaka. Mus. Nat. Hist., (49): 19-22.
15) Hatooka, K. 1997. First record of the deep-sea eel, Dysommina rugosa from Suruga Bay, Central Japan (Pisces: Synaphobranchidae). Bull. Osaka. Mus. Nat. Hist.(51): 7-12.
16) Hatooka, K. and T.Yoshino. 1998. Two rare ophichthid speices of the genus Lamnostoma (Pisces: Anguilliformes) from the western Pacific. Bull. Osaka. Mus. Nat. Hist.(52): 21-30.
17) Hatooka, K., W. Hiramatsu and H. Ikeda. 1998. First record of a muraenid eel Gymnothorax phasmatodes (Smith, 1962) from Japan. I.O.P. Diving News., 9(5):2-5. (in Japanese with English abstract)
18) Hatooka, K., H. Senou and S. Kato. 1998. Record of a muraenid eel Gymnothorax melatremus from Japan. I.O.P. Diving News., 9(12):2-5. (in Japanese with English abstract)
1) Hatooka, K. 1996. Catalogue of the type specimens of amphibians and reptiles preserved in Osaka Museum of Natural History. Bull. Osaka Mus. Natr. Hist.,(50):17-43.