Mahala Mountains National Park was gazetted in 14 June 1985 covering a total area of 1,613 km² including miombo forest, Kasoge (lowland) forest, montane rain-forest between 773–2,460 m.
Its mostly known for habiting different Wildlife species including Chimpanzees, red colobus, red-tailed monkey, blue monkey, giant squirrel, red-legged sun squirrel, brush-tailed porcupine, bushy-tailed mongoose, Angolan black-and-white colobus, Sharpe’s grysbok, red-collared widow-bird, speckled mouse bird, crowned eagle, bee-eater, roller, crested guinea-fowl, Ross’ turaco, white-browed robin-chat, red-winged starling, violet-backed starling, parrots savanna and forest adapted species, 90% of 193 fish species in the lake are endemic.