Who's the New Fish?

It's Pocky!

Recently one of my lionhead goldfish starting going through a dramatic change which happened in under 2 weeks (mostly within a week).

Before and After

My fastest growing lionhead 'Pocky' has rapidly lost his orange coloring. Overall Pocky's behavior has not changed and none of the other lionheads have yet to show any dramatic color changes. I can not pin-point the exact cause of Pocky's change although it could be due to... a lack of light (so I started leaving the light on at night where-as before I didn't really use it), low acidic pH (I have fairly high pH at 7.4+ which makes my water alkaline), food (I had started mixing in OmegaOne pellets last month which could be a possible cause), disease (so I treated the tank as a preventative), or age (I have had these lionhead for under 3 months now).

Before and After (mid transformation)

Whatever the case may be.. at least it is easier to distinguish Pocky from Sumo currently as it's almost like I have an entirely new fish. The little bit of orange that is currently left on Pocky is still rapidly disappearing so, we shall see what happens with Pocky over the next few weeks but I honestly feel this may only be age or gene related (which may perhaps mean that one of Pocky's parents was of the lemonhead variety, and if that's the case I believe Sumo is its sibling so I would perhaps anticipate Sumo changing colors as well). 

Fish Updates

Here is a photo of one of the first batch of fry that my original female guppy (who recently passed away) and one of her sons reproduced, these fry are now 6 weeks old this week and in my opinion have been growing rapidly (they all basically look like this thus far) as they are about an inch in length now.

Here are the original female guppy's first offspring (to which the father is unknown and the mother is now deceased as mentioned before). These two males were the ones that reproduced this current batch of 6 week old fry and are the only 2 fully matured males I currently have. I don't plan on breeding these two again until the 6 week old female fry are mature. These two have also reproduced with there sisters in my other tank and those fry are around 3-4 weeks old now and seem a bit slow growing.

Male guppies at 7.5 months old

Some people have asked me how Mr.Moto my blue veil-tail betta is doing and he's doing just fine although I think he has been wanting to breed for some time now, but I do not plan to breed betta's due to there general temperment and the amount of space it will ultimately consume for me. Today I placed him back into his smaller Cubus tank while I clean out his Mini-Bow. As you can see his coloring has changed yet again. Mr. Moto's head area has turned mostly black in color and he has odd white lines that run vertically between the mouth to gill area, which I think may be a breeding identifer as well as the white area running under his belly. The horizontal stripes along his sides though are what I call his "stress stripes" which didn't start to appear until I moved him back into his Cubus (the tank change and move can cause that to happen obviously but they will go away when he feels more at ease). I also have never noticed the tiny black line of dots on his lower under-belly fin, perhaps that's also a breeding sign.

Click to Enlarge

Guppy Updates - Updated

My male guppy fry just reached 5 months of age (getting close to full adult hood). They have gained a lot of color in their tails over the last month and have been chasing the females constantly. The males tails are still growing longer at this stage where the females tail growth has basically stopped since last month. The color pattern on the males has definitely been changing and enhancing a lot more in color over the past month. The females appear to look just like their mother. The males have developed an interesting spotted color scheme on their body, similar to that of an endler guppy.

Click to Enlarge (around 5 months of age)

Around 2 months or so ago the Mother guppy gave birth to another female fry. It is common for guppies to give birth without having mated again.

Male Color Description

Half tuxedo body, inherited from the mother I'd assume since she has this characteristic. Possible endler guppy body type with orange spot on the top of head and upper sides of body. A solid pale blue/white stripe which runs all the way down the top of the back. The dorsal fin is pale blue/white and orange at the base. The pectoral fins are also pale blue/white.The caudal fin appears to be an orange color shade and has become more orange this past month where it had looked half yellow before. At this stage the caudal is still in the growing process so I am not sure the outcome of the tail shape yet although it looks like it could become a possible delta or flag shape thus far.

Betta Color Change

Today I noticed that Mr. Moto (my blue veil-tail Betta) seems to change body color/pattern almost instantaneously and I began to wonder why this was happening.

Mr. Moto's bright coloring (left) & stripes and dull coloring (right)

The Analysis

I am pretty certain this change is not due to any drastic water changes since that has not really changed at all and his coloring changes so rapidly depending on him it seems. Sure a Betta or any fish for that matter could change colors due to poor water conditions and such but this does not seem to be Mr. Moto's case.

I also have not changed his diet, he loves to eat the Aqueon Color Enhancing Tropical Flakes and he will really make a pig of himself. He also prefers to eat flakes while they are still floating on top the water, which makes me wonder why Betta pellets are generally what is given to them via pet-store Betta food since they tend to sink to the bottom quickly.

Other people have suggested that these horizontal stripes are "stress stripes" but I really don't see that being the case because he'll change back and forth randomly which seems more mood based than anything. To me signals of fish stress would be...gasping for air, clamped or rapid movement of fins, irregular swim pattern, loss of appetite, pale coloring, etc.

I do wonder if it is either a mating or defense mechanism of camouflage that spikes these color changes. Or perhaps it is just a characteristic only shown in some Betta's as I have read that this is more likely to happen in iridescent colored Betta's. However, I'm not sure Mr. Moto is considered "iridescent". I am not sure why this would be mating related in his case as there are no other Betta's around for him to compete with or for.

The Answer
This color change seems to happen from when he gets excited to when he is in a sleeping stage. He turns a vibrant blue shade when he knows I am paying him attention and he may be getting food (his excited stage). However, when he is in a deep sleep his colors tone down and he develops a dull body color with dark stripes. He also has an in-between color variation of both during these mood changes where the top half of his body will be blue but there will be some dark striping coming through the middle lower half of his body. This would more than likely come in handy during mating courtship where the colors would be bright and vibrant (excitement stage again), and as a defense mechanism to camflouge when he is at a more vulnerable stage (ie. sleeping) and the colors would dull into his stripe stage.