Molly's compatible? Plants for fry? Additional fish? - Tropical Fish Keeping - Aquarium fish care and resources
LinkBack Thread Tools
post #1 of 7 Old 06-07-2010, 12:50 AM Thread Starter
New Member
pabearpa's Avatar
Question Molly's compatible? Plants for fry? Additional fish?

Hi All!
After a 40 year absence from having an aquarium, my college son has, indirectly , re-introduced me to the hobby! Unfortunately, I am sure a lot has changed! So please bear with me during this initial inquiry!

Aquarium set-up (you can also see on "Pabearpa20gal" aquarium tag - I hope to add a pic later):
20 gal freshwater (salt added - see inhabitants below);
bio-filter / full hood / rock / 2 live plants / 2 artificial plants / cave / castle / flake food / frozen brine shrimp;
- Mollys:
1 - black - sailfin (orange border on fin) - male;
1 - silver - lyretail - female (acquired pregnant from store - 14 fry in breeder pen);
- Swordtail:
1 - fire orange - male;
- Platy:
1 - "marbled" grayish / orange - sailfin - male (if platy's don't come in sailfin's then it must be a molly?)
- Neon tetras:
6 - 3 male / 3 female;
- Fantail guppy's:
3 - 1 male / 2 female;
- 2 Corydoras.

1. Are all Molly's compatible? Why? The female silver lyretail continually chases and "nips" at the black male and he try's at all possible to keep away from her to the extent where he gets exhausted and lays on the bottom at times. She does not bother the other fish; in fact, I have seen the "platy" become "anamorous" with her (may help answer my question above?)
2. What plants are great hideouts for fry?
3. Are attachable "v- bottom birthing units" advisable?
4. Ideas on how to sell the newborns? At what size is advisable?
5. Given we have a male dominated tank, is it big enough to support adding some females?
6. Any other advice / suggestions given the above layout, etc.?

Thank you for your time and patience!

(Des Moines)
pabearpa is offline  
Sponsored Links
post #2 of 7 Old 06-07-2010, 03:06 AM
iamntbatman's Avatar
Welcome to TFK, and welcome back to the hobby!

Do you know the pH and hardness of your water? Livebearers generally prefer harder, more basic water but depending on the species of your corydoras you might not want to keep them with those livebearers and the neons generally prefer softer, acidic water so also don't mix well with livebearers. That goes for the salt, too; while all livebearers can tolerate (and even appreciate) some level of salt, the corydoras and neons certainly won't so I'd leave that out. So, depending on your pH and hardness, you're likely to be more suited to either soft or hard water fish so you might want to rethink your stocking once you have those numbers.

Mollies are odd critters. They're usually referred to as peaceful community fish but it's really not too uncommon for individuals to not play nice with their tankmates. Sometimes this is due to balancing issues with stocking (generally you want to keep at least two females for every male) but other times, you've just got a jerk fish that needs to go back to the store. Your tank is fairly heavily stocked, so I think you should wait on the pH and hardness before adding more females to the mix.

I think you'll be hard pressed to find a store that will actually give you money (or even store credit) for livebearers. They breed so rapidly that they're just not in demand, especially not young fish and it could be quite expensive (in terms of money and space in your house) to set up additional grow-out tanks to get your fry large enough to sell. If you do want to keep some fry and let them grow out, I've found that floating hornwort and java moss along the bottom of the tank make excellent refuge for fry of all kinds.

4 8 15 16 23 42
iamntbatman is offline  
The Following User Says Thank You to iamntbatman For This Useful Post:
pabearpa (06-07-2010)
post #3 of 7 Old 06-07-2010, 09:26 PM Thread Starter
New Member
pabearpa's Avatar
Thank you for your reply and advice! We will do the water checks and post them for additional input from youself and the community! Again, thank you!
pabearpa is offline  
post #4 of 7 Old 06-07-2010, 10:44 PM
redchigh's Avatar
I also would be careful, black mollies are typically 'weak' fish (from the decades of inbreeding to bring out a mutation that doesn't exist in the wild.)

Also, while salt CAN be good with livebearers sometimes, I do not think it should be used constanty... There isn't really any evidence that it helps, and it can limit your treatment options if a disease does pop up (god forbid).

In addition, plants don't like salkt very much.
If your waterparameters agreee with livebearers, then I'd reccomend hygrophila difformis. Also, 'guppy grass' works great as a fry cover, if you can't get hornwort.

Originally Posted by Christople View Post
^^ genius

Soil Substrates Guide:
Part 1
--------- Part 2

redchigh is offline  
post #5 of 7 Old 06-07-2010, 11:15 PM Thread Starter
New Member
pabearpa's Avatar
Hi redchigh!
Thank you for your advice!
pabearpa is offline  
post #6 of 7 Old 06-08-2010, 10:02 AM
Byron's Avatar
Welcome to Tropical Fish Keeping forum.

I agree with both previous members advice. And on the salt: The water in plant cells passes out via osmosis in an attempt to stabilize the salinity of the aquarium water and in doing so the plants literally dehydrate and die. Neons are characins, and scientific evidence shows that these fish cannot tolerate salt greater than 100 ppm (parts per million) which is not very much. Corydoras have a similar issue.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
post #7 of 7 Old 06-08-2010, 08:06 PM Thread Starter
New Member
pabearpa's Avatar
Thank you Byron! Much appreciated!
pabearpa is offline  

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Are these fish compatible? karaim Saltwater Fish 14 12-03-2008 07:52 PM
Compatible plants? Wallaby Beginner Planted Aquarium 5 11-29-2008 06:25 PM
Additional Livestock (Fish) Possible? Seabiscuit Saltwater Fish 2 03-03-2008 09:06 PM
Are these fish compatible? Steenbergen Freshwater and Tropical Fish 16 05-01-2007 05:50 PM
Compatible Fish for 55 gal? gmckey Freshwater and Tropical Fish 14 04-09-2007 10:41 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome