Frehswater Fish of Lakes and It’s Inlet Rivers in Sulawesi Tengah Province, Indonesia

Abstract

Sulawesi Tengah Province (Sulteng) is in the Wallacea region wich have endemic fish. In addition, the government has also introduced fish for the welfare of community. So far the records of freshwater fish in Sulteng have not been well summarized. Therefore, we explore the results of previous studies fish species in 11 lakes and their inlet rivers in Sulteng. The lake (L) is L. Bolano (Bolanosau), L. Lindu, L. Poso, L. Rano, L. Rano Kodi and L. Rano Bae, L. Sibili, L. Talaga (Dampelas), L. Kalimpa’a (Tambing), L. Tiu and L. Wanga. In addition, we also observed fish in seven lakes between 2012-2019. Fishing uses cast net, seine net, gillnet, and hook and line. Summary and observation result showed that there were 18 families and 27 genera of fish in 11 lake and their inlet rivers in Sulteng. Then there are 15 endemic species in 3 habitats (Lindu, Poso and Tiu), namely Adrianichthys 4 species, Oryzias 6 species, Mugilogobius 2 species and Nomorhamphus 3 species. Introduced fish as many as 23 species, Oreochromis niloticus the most found (8 lakes). Lake Poso (30 species) has the most fish species. Utilization of fish in 11 lake as consumption fish and ornamental fish. Especially for endemic fish, in situ (habitat) and / or ex situ (aquaculture) conservation needs to be carried out in order to remain sustainable. Through aquaculture, the breeding of endemic species that have the potential as ornamental fish and/or consumption can be avoided from exploitation (overfishing) in nature.

Characterizing spatial patterns among freshwater fishes and shrimps of the Poso River (Sulawesi, Indonesia) using DNA barcoding

“…Notably, these species were conspicuously absent in the downstream region. Previous research reported the presence of Oryzias sh species in Lake Poso and its inlet (Herjayanto et al 2019). The discrepancy in the number of species captured can be attributed to the burgeoning population of invasive species, which are gradually displacing native sh.…”

Penggunaan Pakan Berbahan Baku Tepung Osteochilus hasselti Terhadap Pertumbuhan Ikan Nila (Oreochromis niloticus)

“…Impor tepung ikan ini terjadi karena pasokan tepung ikan lokal tidak dapat memenuhi kebutuhan. Oleh karena itu, biaya pakan dalam kegiatan pembesaran ikan harus dapat ditekan dengan memanfaatkan pakan berbasis bahan baku lokal non ekonomis sebagai sumber proteinnya (Safir et al, 2022;Tobigo et al, 2022) Danau Rano di Kabupaten Donggala Sulawesi Tengah terdapat pengembangan budidaya nilem (Osteochilus hasselti) hasil introduksi (Herjayanto et al, 2019) yang cukup melimpah, namun tidak bernilai secara ekonomi, karena tidak disukai oleh masyarakat setempat. Ditambah lagi nilem telah menjadi hama dalam kegiatan budidaya pada perairan danau Rano (Safir et al, 2020).…”

Traditional fishing gear for sarasin’s goby (Mugilogobius sarasinorum), endemic to lake Poso, Sulawesi, Indonesia

“…Geological, geographical and ecological isolation have caused the evolution of unique aquatic biota in Lake Poso [4]. The endemic fauna include several endemic fish species including Adrianichthys kruyti, A. oophorus, A. poptae A. roseni, Mugilogobius amadi, M. sarasinorum, Nomorhamphus celebensis, Oryzias nebulosus, O. nigrimas, and O. orthognathus [6][7][8][9][10][11][12].…”

“…In recent decades, the abundance of endemic fish populations has declined, due to similar threats to those faced by fish in many other lakes such as eutrophication, intensive fishing, invasive non-native species, and pollution [12,13]. One of the endemic fish affected was A. roseni; this fish was collected in September 1978, but until now there have been no further reports [7][8][9]12]. In addition, the status of Sarasin's goby M. sarasinorum in the International Union for Conservation of Nature (IUCN) Red List was changed from Vulnerable to Endangered in 2019 [8,9,14].…”