Table 3. Breakdown of hydropower development and estimated fish species richness by elevation range.

Data on fish species are provided by the Amazon Fish Project (4).

Elevation range (masl)	Existing dams/under construction	Proposed dams	Estimated number of fish species
>4000	52	1	65
3000–4000	23	10	35
2000–3000	29	24	69
1000–2000	30	57	257
500–1000	7	41	602
<500	3	27	1549