Assessment of water quality parameters of Lake Chamo implications for freshwater fishes, Gamo Gofa Zone, Southern Ethiopia

Overview of Length-Weight Relationship, Condition Factor and Size at First Maturity of Nile tilapia Oreochromis niloticus (L.) in Different Water Bodies of Ethiopia: A Review

“…Relatively high condition factor was recorded in Lake Chamo (2.35) (Teferi and Admasu, 2002) and River Baro (2.05) (Melak, 2009) than in Gilgel Gibe Reservoir (1.87) (Wakjira, 2013), Langano (1.67) (Tadesse, 1998) and Langano (1.77) (Temesgen, 2017). However, recently in Lake Chamo the water quality has drastically altered due to improper land use practices such as fertilizer use, nutrient loading, agricultural activities that causes poor water quality, it is in turn stress on the fishes' body condition (Teffera et al, 2017;Utaile and Sulaiman, 2016). In the same way, the Ethiopian rift valley lakes such as Ziway, Langano, Hawassa, Koka and Beseka are under high human pressure like lake shore farming, destruction of buffer zone, effluent discharges from textile, ceramic and tannery industries drained into water bodies (Gebretsadik and Mereke, 2017;Tesfahun, 2018).…”

Water quality problems, related challenges and their impacts on Ethiopian fishery

“…Suspended solids are floating substances and have the ability to remain in water bodies under suspension. They can reduce the net primary production by blocking solar radiation (Utaile and Sulaiman, 2016). Phosphorus or phosphates are the main factors that influence the water quality, and the standard limit set by EPA is 10 mg/L.…”

“…Ethiopia is endowed with inland aquatic ecosystems including lentic and lotic water bodies namely the Rift Valley, Abay, Awash, Baro-Akobo, Omo-Gibe, Tekeze and Wabishebele-Genale drainage basins (Awoke, 2015;Utaile and Sulaiman, 2016). Ethiopian important commercial fishes were widely distributed in the aforementioned drainage basins (Golubtsov and Mina, 2003).…”

“…from the water sediment or indirectly from contaminated water and through the food chain (Dawodu et al, 2015;Desta et al, 2006). In other words, the water quality parameters such as salinity and turbidity reveal increasing trends due to anthropogenic activities within the catchments and having drastic effect on fish production (Utaile and Sulaiman, 2016). Various studies have been conducted on human activities and their impacts in Ethiopian water bodies (Yohannes et al, 2013;Worako, 2015;Berehanu et al, 2015) such as Lake Hawassa (Utaile and Sulaiman, 2016), Lake Chamo, (Desta et al, 2015;Desta et al, 2017), Lake Ziway (Goshu and Aynalem, 2017;Gebremedhin et al, 2018), Lake Tana, (Abrehet et al, 2015), Blue Nile River (Minuta and Jini, 2017), and Walleme River Southern Ethiopia (Figure 1).…”

“…Various studies have been conducted on human activities and their impacts in Ethiopian water bodies (Yohannes et al, 2013;Worako, 2015;Berehanu et al, 2015) such as Lake Hawassa (Utaile and Sulaiman, 2016), Lake Chamo, (Desta et al, 2015;Desta et al, 2017), Lake Ziway (Goshu and Aynalem, 2017;Gebremedhin et al, 2018), Lake Tana, (Abrehet et al, 2015), Blue Nile River (Minuta and Jini, 2017), and Walleme River Southern Ethiopia (Figure 1). Good water quality plays an important role in wild fishes and aquaculture development in the country (Utaile and Sulaiman, 2016). There is little or no compiled information on the causes of water pollution and its impacts on Ethiopian fisheries.…”