Compatability is significantly influenced by the order of
introduction, shelters available and the relative size & maturity of
the fish when introduced to each other. My comments below are
generalities which will always have exceptions.
Also, my techniques are quite methodical & time consuming. I would
'seed' the tank with invertebrates and plants for many many months
before adding the fish in a specific order. I would have bought the
fish and had them in holding/quarantine tanks for a few months before
they went into the 100g. The stocking priority is not just about
compatability, but to ensure that you don't introduce any diseases,
which are a real nuisance to adress in that environment (large,
planted, hot water, low pH, softwater, high $$ investment).
NetMax
On Dec 28, 12:01 pm, NitroCarbon <
next...@networkspeedy.com> wrote:
> Since I'm venturing into the discus world (and with great caution), I am
> planning a (heavily planted + CO2 @15ppm) tank for the discus and want
> to know about incompatibilities in the fish I'm want to newly introduce
> or relocate to from other tanks to the discus tank. I'm hoping to draw
> on the experience of others who know more than I do, and who can add to
> the information I'm already reading online.
>
> So here it is then; are any of the following going to be incompatible
> with discus in a 100 gal?
>
> * 20 cherry shrimp
I would seed the tank with plants & lots of Cherry shrimp and let them
establish & replicate themselves for up to a year. With any luck,
they will be fed off (nutritious source of live food) and never wiped
out. If your intent is that they co-habitate, the tank would need to
be very thick in ground cover, and the shrimp would need to establish
for at least a week by themselves.
> * 3 clown loaches
I wouldn't. They can be too gregarious, they compete with the Discus
scavenging along the bottom and are difficult to later remove.
> * 3 zebra danios
In a 100g, I'd put many more for presence, however they will compete
with the Discus for surface food. They could be too active for
Discus, so I'd let the Discus establish before adding the danios.
Personally I would not add any kind of danio.
> * 8 neon tetras
Neon & Discus will co-exist nicely. About 30 would look good.
Cardinal tetras are a bit bigger and more sturdy.
> * 2 bristle nose plec
Nope. Despite the Bushynose's wonderful and well-deserved reputation,
Discus exude a very nutritious slime coat (which their fry feed off
of), and as soon as (or if) the plecos notice, they will be attaching
themselves on the Discus to rasp a quick meal.
> * 3 siamese algae eaters (true SAEs)
Nope. Despite the SAE's wonderful and well-deserved reputation, they
do grow to about 5" in length. A more size-appropriate algae eater is
the Otocinclus (Otos).
> * 6 cherry barbs
Meh. Might be fine, 6 would vanish into the underbrush, rarely to be
seen. They will compete somewhat for scavenging, but if they stay in
the thickets, it will affect the shrimp more than the Discus. I
wouldn't. Cherries can also get a little pushy, but that's my limited
experience.
> * a lone fancy guppy
Why not? If it's disease-free, the worse that can happen is that it
becomes Discus-chow, and that would be a big Discus, so should not be
an issue.
> * 3 perl guoramis
Nice choice, though I have never seen Asian Pearl gouramis mixed with
South American Discus, they have similar temperaments. Ordinarily,
mixing Gouramis and Cichlids can be hit & miss, but Pearls are quite
sedate and present nicely in tall tanks. They will tend to the upper
50%. Discus tend to be everywhere unless/until there is something of
special interest.
> * 6 harlequin rasboras
Harlequins or Espei would make a great addition. I'd go with about
30. They will shoal nicely through the plants and are not strong
competitors for food.
>
> From what I've read, the faster, constantly zipping around zebra danios
> are going to have to stay in their existing tank, and probably the perl
> guaramis. I really do ejoy a good variety of fish in my aquariums
> (probably obvious from the above list), but I also place a great deal of
> emphasis on species compatibility and I don't just casually put fish
> together without a good bit of research or the advice of a few trusted
> friends.
Variety can have a negative effect on appearance. Plants for example,
you can have one of everything and there's no flow to follow, like a
jigsaw puzzle never assembled. A 100g tank looks uniform with about 3
to 7 plant species, starting low in the front to provide swimming area
for the Discus, and reaching high at the back to hide plumbing. Any
type of lilypad works well with Discus, but not so well with other
plants because of the shade they create, so ymmv.
The same applies with fish, which are also layered into the tank, by
swimming area, color, activity level and disposition. I think I wrote
something about this in
www.netmax.tk Having too many species in
small quantities might look artificial (like a zoo), unless that's the
look you're going for (it's your tank : ) A 100g Discus tank, would
look natural and still very full with only 4 to 6 species of fish.
Assuming a cycled tank with growing plants, perhaps 7 Discus, 20
Cardinals, 6 Otos, 20 Espei, 20 Pristella and 20 Rummynose. Heat &
filter it redundantly (each heater/filter good for 100g). This is a
good stock load (the tetras have very little bio-mass) and as the
Discus grow and need more space, the tetras will have thinned out
(they have a shorter life expectancy). If adding Pearls (3?), drop 1
tetra species. Notice that the 4 small species (tetras & rasboras)
are all quite different behaviourally. The Cardinals & Espei move
similarly but with very different colors and body shapes. The
Pristellas lack the color but have a very active care-free swimming
style keeping the tank alive, like butterflys in a garden. The
Rummynose are purpose built for speed, but their interest is in each
other, so they make excellent additions (like a danio with a better
temperament).
> As a side note, I'm going to purchase a V2 Pure reverse osmosis system
> for the new tank. I'll certainly have some RO questions forthcoming.
>
> Thank you friends for your thoughts on the compatibilities of these fish
> with a pair of discus.
Pair of Discus? hmmm, ok, but I'd go with a minimum of 5. jmo : )
cheers
> ~nc