Environmental Assessment
Volume E-4.3
Tailings Facility
Fish and Aquatic Resources
Ambatovy Project
170
January 2006
Table 4.3-2 Fish Species Recorded in the Tailings Local Study Area During 2004-
2005 Surveys
Family
Species
Origin Conservation Status
(a)
IUCN Status
(b)
Ambassidae
Ambassis fontoynonti
E
DD
Anabantidae
Ctenopoma ansorgii
I
Anguillidae
Anguilla bicolor
N
S
nl
Anguillidae
Anguilla marmorata
N
S
nl
Anguillidae
Anguilla mossambica
N
S
nl
Bedotiidae
Bedotia madagascariensis
E
T
NT
Clupeidae
Sauvagella madagascariensis
E
nl
Cichlidae
Oreochromis macrochir
I
Cichlidae
Oreochromis niloticus
I
Cichlidae
Tilapia zilii
I
Cichlidae
Tilapia rendalli
I
Eloetridae
Hypseleotris tohizanae
E
U
nl
Eloetridae
Ophiocara macrolepidota
E
U
nl
Gobiidae
Glossogobius giuris
N
S
nl
Ophicephalidae
Channa maculata
(c)
I
Osphronemidae
Osphronemus goramy
I
Poeceliidae
Xiphophorus maculatus
I
(a)
Sparks and Stiassny (2003).
(b)
IUCN Red List (2004).
(c)
Misidentified as Ophicephalus striatus.
Note: E = endemic, I = introduced, N = native; S = secure, T = threatened, U = unknown; IUCN status: nl = not listed,
DD= data deficient, NT = near threatened.
Aquatic Macro-Invertebrates
A total of 55 macro-invertebrate taxa were recorded in the tailings LSA during
the 2004-2005 survey (Table 4.3-3). No clear distributional pattern was present
for number of taxa or diversity between the sites in the LSA, but the community
analysis indicated a seasonal change in density and abundance. The family
Chironomidae
(midges) was the most abundant taxa present during the low flow
survey; the family
Atyidae
(freshwater shrimp) was the most abundant taxa at
sites surveyed during the high flow survey. The highest total number of taxa,
species richness and density of invertebrates was recorded at the wetlands site
TMT006, during the high flow survey.
Many freshwater invertebrates are used locally as food. These include several
crustaceans (freshwater shrimp) and gastropods.
