Ambassis miops

Abstract: Daitreosoma parva n.sp. (Monogenea: Dactylogyridae) was discovered in gill smears from four of five glassies, Ambassis miops Gunther (Centropomidae), from fresh-water pools on Guadalcanal, British Solomon Islands Protectorate. Only two species of Daitreosoma were known previously, both of them parasitizing Therapon spp. (Theraponidae) from the Thomson River, Queensland. D. parva n. sp., measuring from 133 to 145 μ by from 38 to 41 μ (av., 139 by 39 μ), is only about one-quarter the length and width of its congeners. It also differs from these in details of the haptorial structures and genitalia, notably in that the testis is ventral to the ovary. An encysted metacercaria of Stephanostomum sp. (Digenea: Acanthocolpidae) is also recorded from the gills of A. miops. One of 12 mullets, Mugil oligolepis Bleeker (Mugilidae), from a tidal stream on the island of Aneityum, New Hebrides, had an example of an undetermined species of Microcotyle (Monogenea: Microcotylidae) on its gills.

Abstract: Batetangnga River is one of the rivers in West Sulawesi and is well known as an ecotourism area. This preliminary study was performed to reveal fish fauna in the Batetangnga River, West Sulawesi. Ichthyofauna research was conducted in April and May 2021 at two stations in Batetangnga River, namely Rawa Bangun and Butute’neng. During the study period, a total of 14 species belonging to 9 families were identified. No endemic species were found in the study area. Native fish species such as Stiphodon semoni, Butis butis, Glossogobius sp., Glossogobius aereus , Stiphodon sp., Giuris sp, Atule sp. Ambassis miops, Ambassis interrupta, Microphis sp. were recorded. Four alien fishes species were documented i.e. Aplocheilus panchax, Poecilia reticulata, Anabas testudineus , and Oreochromis niloticus . Freshwater fish exploration and efforts to control alien fishes species in west Sulawesi are essential things to be done shortly.

Abstract: families, Gobiidae had the most species (34 species, 13.9%); Carangidae the 2nd (15 species, 6.1%); and then Apogonidae and Clupeidae (11 species, 4.5%). Nearly half of these species, including 10 families and 111 species, were not previously recorded from the entire western coast of Taiwan, and include 5 new records for Taiwan. They are Ambassis miops, A. interruptus, and A. commersoni of the Ambassidae; Epinephelus lanceolatus of the Serranidae; and Zenarchopterus dunkeri of the Hemiramphidae. Diagnostic characters and specimen photographs of these 5 species are provided. The fishes collected throughout the estuarine areas comprised 208 marine species, of which 124 were marine stragglers and 84 were marine estuarine-opportunists, together with 29 estuarine species, 6 freshwater species, and 1 catadromous species. Comparison of the faunistic similarities and the dendrogram among the 5 estuarine zones near Tsengwen, the estuarine zones of Tainan (Yenshui and Erhjen), of the Kaoping River in southern Taiwan, and the Tanshui River in northern Taiwan indicate that the species composition of the 5 Tsengwen estuarine zones are in 1 cluster, and they group with the southern estuaries of both Tainan and Kaoshiung rather than with the northern fish fauna at Tanshui. This result is consistent with previous studies on coral reef and mangrove fishes whose results indicate that community structures between northern and southern Taiwan are quite different.