Yes I think the DOC leached from wood, bark, or leaves is probably helpful to blackwater-adapted fish, especially in soft water, but maybe in harder water too. Neither E. chaetodon nor F. lineolatus really needs soft acidic water; moderate hardness and neutral pH should be fine. Wild populations are most often found in acidic water, but i think that's due more to competition rather than physiological need.
making your own black water extract
Started by
Auban
, Oct 18 2015 07:41 AM
23 replies to this topic
#21
gerald
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- Global Moderator
- Wake Forest, North Carolina
Posted 08 November 2017 - 01:42 PM
Gerald Pottern
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Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel
#22
mattknepley
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- NANFA Member
- Smack-dab between the Savannah and the Saluda.
Posted 08 November 2017 - 05:12 PM
Thanks, Gerald. What competition are you referring to? Are the BBS and Lined Topminnows the "winners" or "losers" for being there?
Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."
"No thanks, a third of a gopher would merely arouse my appetite..."
#23
gerald
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- Global Moderator
- Wake Forest, North Carolina
Posted 09 November 2017 - 12:38 PM
I meant competition with other fish that are not quite as well soft-acid-adapted, like most Lepomis, minnows, and other Fundulus. BBS and lineolatus can compete and win against (or at least co-exist with) those species in soft-acid water (low ions & low food supply), but not in harder, higher-pH waters where other species have greater advantage ... my speculation.
Gerald Pottern
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Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel
#24
ChiefBrody
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- NANFA Guest
Posted 30 November 2017 - 10:59 AM
Oak leaves
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