In the form of marine patrols by the Ferdows I research vessel, the research project "Stock assessment and ecobiological monitoring of benthic resourcesin the Persian Gulf and the Oman Sea" has been underway since 2017. Examples of fish species unique to deep ocean areas were identified in the coastal waters of Sistan and Baluchestan province (Gwadar 30 61 - Meidani 00 59). The "deep - sea batfish",
Halieutaea indica
, was reported as the first record of the presence of this species and family in the list of fish species in the north and northwest Indian Ocean (Gulf of Oman). According to Dr. Fereidoon Oufi, the habitat of this species was reported at depths of 200 - 4000 m in the Indian Ocean off the coast of Iran according to the articles and academic references in the field of ichthyology, but 7 specimens in the Gwadar - Pasabandar area (at depths of 65 - 70 m) in 2017 - 2018, 9 specimens in Beris - Pasabandar area (at depths of 40 - 50 m) in 2018 - 2019, and one specimen in Tang - Meidani area on November 2019 (at depths of 25-30 m depth) with the averages length of 8.5 to 12.5 cm were identified in the catch composition that were kept in the Zoology Museum of the Shiraz University (ZM - CBSU) for further genetic and molecular studies. Accordingto studies conducted by this researcher, it seems that the habitat shifting of this species from deep sea zones to shallow coastal waters of Iran (Gulf of Oman) has taken place by the formation of dead zones (hypoxic zones with low oxygen) in the north and northwest Indian Ocean basin in the Arabian Sea and the Gulf of Oman that have not been reported from other countries of the region so far.