I was thinking to getting "Pink Lemonade" killies (Fundulus cingulatus) but I already have golden killies (Fundulus chrysotus) and I was worried if they can breed each other if I put them in same tub or should I put them in different tubs?

Also are hybrid fundulus existed? Just wondering.

I'm sure it's possible. I wouldn't take the chance.

I just googled for the hybrid fundulus but I found only mostly for research on Fundulus diaphanus x Fundulus heterious (excuse my spelling) of their reproductive of female hybrid. Its just like Amazon mollies only in egg laying version. But no records of golden x banded killifish hybrids. So I don't know.

Did I missed something? There was replies about it but seems have disappeared. Oh well.

Did I missed something? There was replies about it but seems have disappeared. Oh well.

Your moderators at work. (sorry guys)

Fundulus can and will interbreed.....so any kept together could very well hybridize. I would stick with single genus per tank.

Fundulus can and will interbreed.....so any kept together could very well hybridize. I would stick with single genus per tank.

Cingulatus and chrysotus don't seem to hybridize,at least in nature.Actually the preferred habitats of these two are different.
In my area f confluentus and f pulvereus freely hybridize.I really think these are only color variations of a single species.Within the variations are smaller variations.I really wish someone who knew how would closely examine this.I believe a beautifull fish could be bred from these fish.Adinia also has two slight color varities in males.

From my experience, fish that wouldn't be attracted to each other in the wild for any reason will get the hots for each other when confined to a small space. Not unlike people, i guess. I would keep them separated.

As a sidenote, I have always been amazed that F. notatus and F. olivaceus know well enough not to cross the line and mate with the other species in the wild. Amazing stuff.

F. notatus and olivaceus have different karyotypes, so for the most part even if they decide to spawn together there's a low likelihood of viable offspring being produced. Both species have distinct population structures (as I recall) that may be different species anyway.

I had a single notatus with a single olivaceus. They were kept with several bluefin killis. I moved all of the adults out of the tank. A short while later, I noticed fry in the tank. Most were bluefins, but one was different, and as it matured it was obviously a topminnow. Had to have been a hybrid. The fact that it was a single fish illustrates that the rest of the spawn was not viable. Though one happened to hook up right I guess.

I had a single notatus with a single olivaceus. They were kept with several bluefin killis. I moved all of the adults out of the tank. A short while later, I noticed fry in the tank. Most were bluefins, but one was different, and as it matured it was obviously a topminnow. Had to have been a hybrid. The fact that it was a single fish illustrates that the rest of the spawn was not viable. Though one happened to hook up right I guess.

So what this hybrid looks like? What you doing with this fry? Just curious...

It looked exactly as one would expect it to. Like a notatus or an olivaceus. It is no longer around. I actually figured at the time that these fish were close enough that they would easily hybridize. Now that I know differently, I wish I had not just chucked it into one of the outdoor ponds.

Are you certain you had both olivaceous and notatus? There is enough variation to make a solid ID of live specimens difficult. Just ask Bruce "Those are notatus!" Stallsmith

That is a good question, but the olivaceous was confirmed in Alabama, and the notatus was locally collected in Ohio.

Are you certain you had both olivaceous and notatus? There is enough variation to make a solid ID of live specimens difficult. Just ask Bruce "Those are notatus!" Stallsmith

Well, you know, they were notatus...

So, did your hybrid look like a notatus with spots, or an olivaceous without spots?

I was thinking to getting "Pink Lemonade" killies (Fundulus cingulatus) but I already have golden killies (Fundulus chrysotus) and I was worried if they can breed each other if I put them in same tub or should I put them in different tubs?

Also are hybrid fundulus existed? Just wondering.

Hey My Daughter named that fish ....go figure....


Fundulus Cingulatus as an Aquarium Species
Robert Rice
robertrice at juno_com

Deep in the secluded creeks, ditches and pools in the far
Southeastern United States lives a forgotten relic. A
discarded Uncle of sorts, the "pink lemonade" killie fish.
He is small (less than 5 inches) beautiful ,durable and the
premiere of the Fundulus Clan. Yet he is a total unknown . A
few odd ball fisheries personnel know him, and even fewer
collectors keep him. They and no one else know this star of
the heavens that is the glorious killie fish I call the pink
lemonade killie. Which is a shame because he like many North
American species deserves a place in home aquariums. For a
variety of reasons American Aquarist always seem to look
overseas befor they look here at home. Until public
awareness increases this small fish will have little support
in the conservation community or with Aquarist.

His colors can be described as intense. His fins radiate
deep pink while his body holds deep stripes of the same
color. All wrapped up in a golden background. Wow you say ,
what's the downside of this little gem ? There is but only
one. It's that North America's co habitators have virtually
ignored this little fish. Thus it remains a life history
and ecological mystery. While ichthyologist ponder it's
supposed proper genus and species it remains a total recluse
in the aquarist, fisherman and general publics eye.

If there ever was an easy to reproduce, easy to acquire
unloved species this guy is it. There are NO life histories
published anywhere. This little top minnow lives in total
ambiguity. He is tough ,colorful and unloved. I know of no
one outside myself who has bred this fish ! Which if you
know me is a pretty sad indictment of things. I keep a dozen
tanks or so most of them in my garage with no filters,
heaters or power toys of any kind. Inspite of my many short
comings as an Aquarist F. Cingulatus did the deed and bred
in my nasty ole garage tank. So if a yutz like me can
successfully breed this species imagine what would happen if
Serious Aquarist took up the torch !

I typically collect F. Cingultus in small ditches and
swamps with regular water flow. In locations with an erratic
flow they don't exist. I believe that they can take turbity
and temperature extremes but can not stand stagnant water.
With just a small flow the water remains fresh enough to
support the pink lemonade killie. In it's range there is a
huge diversity in color. It goes from a almost colorless
green to the radiant pink lemonade version I collect
locally. I have noticed that in locations with a red algae
you will find the pink version. In locations with darker
water you get the green version. Obviously this adaptation
helps them avoid predation. For the Aquarist this range of
color promises to lead to other color morphs with just a bit
of selective breeding. In many locations I find them the
most common species . So if you are near the Gulf Coast you
are within driving distance of the pink lemonade killie.

Once in the tank they are very easy to care for. Being top
minnows they spend the bulk of their time ducking in and out
of floating vegetation. Chasing each other around ,
basically disinterested in the other inhabitants of their
tank. So with their top minnow habits they make an excellent
community tank species. They feed eagerly on flake and
frozen foods. They are vegetation spawners with the males
pushing the females into the weeds where a few eggs are laid
in the roots of floating plants. Watersprite, Nitella and
Java Moss make excellent choices for the job. You can also
try the tried and true artificial spawning mop. The young
are very durable as a matter of fact in my main tank the
trio I have has produced young. I know have a handful of
half inch Cingulatus tussling with my juvenile Dollar
Sunfish for food.

Thanks to my 7 year daughter Erin who named the local
variety . Her name stuck with the local children and then
their parents as they set up tanks for their children and
wanted local species. Now all my collecting buddies are
calling it the pink lemonade killie so it looks like
Cingulatus now has a common name. Go figure from the mouths
of Babes.