Třída: Actinopterygii - paprskoploutví
Řád: Ophidiiformes - hrujovci
Čeleď: Ophidiidae - hrujovití

Typový druh: Pycnocraspedum squamipinne Alcock, 1889

Reference: Alcock A. W. 1889. Natural history notes from H. M. Indian marine survey steamer `Investigator,' Commander Alfred Carpenter, R. N., D. S. O., commanding.--No. 13. On the bathybial fishes of the Bay of Bengal and neighbouring waters, obtained during the seasons 1885-1889. Ann. Mag. Nat. Hist. (Ser. 6) v. 4 (no. 23). 376-399.

Přehled druhů

• Pycnocraspedum armatum Gosline, 1954
  Gosline, W. A. 1954. Fishes killed by the 1950 eruption of Mauna Loa. II. Brotulidae. Pacific Science v. 8 (no. 1): 68-83.
• Pycnocraspedum fulvum Machida, 1984
  Okamura, O., T. Kitajima, (Editors). 1984. Fishes of the Okinawa Trough and the adjacent waters. Vol. 1. The intensive research of unexploited fishery resources on continental slopes. Japan Fisheries Resource Conservation Association, Tokyo. Fish. Okinawa Trough v. 1: 1-414, Pls. 1-205.
• Pycnocraspedum microlepis (Matsubara, 1943)
  Matsubara, K. 1943. Ichthyological annotations from the depth of the Sea of Japan, I-VII. Journal Sigenkagaku Kenkyusyo v. 1 (no. 1): 37-82.
• Pycnocraspedum phyllosoma (Parr, 1933)
  Parr, A. E. 1933. Deepsea Berycomorphi and Percomorphi from the waters around the Bahama and Bermuda islands. (Scientific results of the third oceanographic expedition of the "Pawnee" 1927.). Bulletin of the Bingham Oceanographic Collection Yale University v. 3 (art. 6): 1-51.
• Pycnocraspedum squamipinne Alcock, 1889
  Alcock, A. W. 1889. Natural history notes from H. M. Indian marine survey steamer `Investigator,' Commander Alfred Carpenter, R. N., D. S. O., commanding.--No. 13. On the bathybial fishes of the Bay of Bengal and neighbouring waters, obtained during the seasons 1885-1889. Annals and Magazine of Natural History (Series 6) v. 4 (no. 23): 376-399.

Statistické údaje

Počet druhů: 5