Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - Unhealthy Fish
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 08-17-2019, 08:56 AM   #1
Aquarium Advice Newbie
 
Join Date: Aug 2019
Posts: 3
Help with Harlequin Rasbora colour change.

One of my Rasboras has developed a grey/black coloration on its head and all the way along its top like a stripe. It's hard to describe, I have a picture but I don't think I can link to it as a new account (?)

I've had their school for 10 months and this is the only one with these markings, and it's only just developed in the last few days.

Water parameters are fine. 0 ammonia, 0 nitrite, ~10 nitrate, ~7 ph
Tank is 200L (~43 gallons) and understocked.
I do 30% water changes weekly.

Behaviours in all fish (including this one) seem normal; the fish are eating fine, swimming fine etc.

Their have been two changes in the tank lately that I can think of:

1) I bought a couple of new types of food for variety, some dried daphnia and a little bottle of brine shrimp suspended in liquid. I have also fed the tank blanched peas on a few occasions which is something I've not done in the past.

2) I opened the venturi valve on the filter for the first time over the week between water changes last week, but it is closed again now.

-------------
I'm not sure if this is something disease related or just a normal pigmentation change?

If it is normal, why did it only just happen now after all this time?
If it is not normal, can anyone help diagnose it and/or suggest treatment?

Thank you for your time!
__________________

__________________
Bobadubub is offline   Reply With Quote
Old 08-18-2019, 04:04 PM   #2
Grand Poobah of Fish Poo
 
Barliman's Avatar


 
Join Date: Feb 2016
Location: Los Angeles, 3rd door on the left
Posts: 2,088
If he's not showing any changes in behavior (shy, refusing to eat), I wouldn't worry. He could just be a genetic sport with different coloring.
__________________

__________________
----
2x20-longs, one heavily planted. Platy rancher. They. Won't. Stop. Breeding.
Barliman is offline   Reply With Quote
Old 08-18-2019, 07:29 PM   #3
Aquarium Advice Newbie
 
Join Date: Aug 2019
Posts: 3
A genetic marking that just suddenly appeared after 10 months?
Is that a thing?

but yeah, I'm not going to act on it until I have a more conclusive idea that there's a problem.

I know with some species their colours can sort of 'come in' after a settling period (no idea if that's true with Harlequin Rasboras) but this fish has been happily settled for months and months, no obvious problems or signs of stress.
__________________
Bobadubub is offline   Reply With Quote
Old 08-18-2019, 08:40 PM   #4
Grand Poobah of Fish Poo
 
Barliman's Avatar


 
Join Date: Feb 2016
Location: Los Angeles, 3rd door on the left
Posts: 2,088
Quote:
Originally Posted by Bobadubub View Post
A genetic marking that just suddenly appeared after 10 months?
Is that a thing?
Goldfish and bettas can change a few times in their lives. I haven't seen it with rasboras, but I wouldn't be surprised.
__________________
----
2x20-longs, one heavily planted. Platy rancher. They. Won't. Stop. Breeding.
Barliman is offline   Reply With Quote
Reply

Tags
change, colour, harlequin, harlequin rasbora, rasbora

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Harlequin Rasbora colouration change / smudge Bobadubub Freshwater & Brackish - Unhealthy Fish 0 08-16-2019 10:43 PM
Harlequin Rasbora lost colour jen54 Freshwater & Brackish - Unhealthy Fish 3 11-03-2013 07:32 PM
Brilliant Rasbora & Harlequin Rasbora with protruding & mis-shapen stomachs! Help? Jennie L Freshwater & Brackish - Unhealthy Fish 6 05-30-2012 03:42 AM
Mixing Blue Harlequin Rasboras with Harlequin Rasbora?? Manix Freshwater & Brackish - General Discussion 9 10-28-2011 10:06 PM
Rasbora Espei and Harlequin Rasbora will school together ? rasbora Freshwater & Brackish - General Discussion 1 06-07-2011 10:01 AM







» Photo Contest Winners







All times are GMT -4. The time now is 03:27 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×