Bioaccumulation of Heavy Metals in Some Tissues of Fish in Lake Geriyo, Adamawa State, Nigeria

Table 1

Fish species ecological characteristics.

Scientific name

English name

Feeding habit

Biotype complex

Number of samples

Length (cm)

Weight (g)

Clarias anguillaris

Cat fish

Carnivore; (fish & invertebrate)

Benthnic

5

27.80–41.00

30.5–49.2

150–458

186.5–712.8

Heterotis niloticus

African bony tongue

Omnivorous/herbivore

Pelagic

5

17.40–20.20

36.5–58.5

53.6–86.1

403.6–1370

Tilapia zilli

Mango fish

Omnivorous/herbivore

Pelagic

5

14.50–17.90

19.3–23.5

36.8–101.5

125.2–180.4

= dry season; = wet season.