Your Betta’s Color Reveals More Than You Think

There's a tub of betta pellets on the shelf at almost every big store in this country. About $8. And right on the label, it promises to enhance the vibrant color of your betta. That's the promise. Here's what 31 years at the counter taught me. A betta's color doesn't come out of a tub. It comes out of the water, the heat, the hour of the night, the fish's own genes, and how old he is. Most of the time, a betta changes color. Nothing is wrong at all. And when something is wrong, the tub can't fix it. So before you buy one more thing for a pale fish, hear me out. Stop fixing a problem the tank doesn't have. Today I'm counting down seven things your betta's color is telling you. Some of them mean relax. One or two mean pay attention. Number three is a betta that rewrites his own colors over his life, all by himself, and nothing is wrong with him. And number one is a jar I stocked for years, not because it worked the way the label said, but because the rep gave me a deal on it. Stay for that one, folks. It changes how you read the whole fish. I'm Walt Brennan. I ran a fish store in Dayton, Ohio for 31 years. I'm not a vet, and I'm not a biologist. I'm the guy you brought the pale fish to. And here's how the counter works. A worried owner walks in, and a worried owner buys something. The shelf has a bottle for the fear. It doesn't have one for the cause, because the cause is usually a thermometer, a test strip, or a clock. Nobody lied. The bottle just sold better. If you know somebody with a new betta, pass this along to them and subscribe. Number seven. Your betta looks pale at night. This is the one that sends people into a panic. You get up for a glass of water at 11, flip on the tank light, and the fish that was bright red at dinner looks washed out and dull. Just hang in there. Here's what's happening. Betta's dull their color when they sleep. The thinking is that a sleeping fish is harder for a predator to spot if he isn't lit up like a stop sign. Once he wakes up and starts swimming, the color comes right back. That's all it is. The warning sign isn't a pale fish at night. It's a fish that stays dull while he's awake and moving around in the daytime. So if you catch him pale in the dark, turn the light off, go to bed, and look again in the morning. Don't reach for a bottle at midnight. He's not sick. He's asleep. Next, the fish you actually bought. And why he looked the way he did. Number six, the pale fish in the cup. You know the display. A row of little plastic cups, one betta in each, and half of them look a little faded. Maybe yours did too when you picked them. Here's what most keepers miss. Moving a betta into a new home is one of the biggest sources of stress and shock in its life. And store tanks and cups are often far too small to begin with. Then comes the car ride, the new water, the new light. The sources say color loss to that kind of stress can take a long time to come back. So the fish you looked at in the store wasn't the real fish. It was the stressed version. The cups exist because they fit the shelf, not because they fit the fish. They sold better. Here's what to do instead. Give a new betta a stable, warm, filtered tank and a few weeks of nothing. No new decorations, no new products, no rescaping, because he looks dull. Stable is the treatment. Most new owners do too much in that first week, not too little. Next! Stripes, and why the same stripes can mean two completely different things. Number five, stripes. Every so often, a betta shows up at the counter with dark stripes running along the body, and the owner's sure it's a disease. Usually, it's stress stripes. They're more common and easier to see on females, though males get them too. The usual causes are sudden change. New decorations, a new tank made, a big water change all at once, a tank under about five gallons, a temperature that swings, or water that's gone bad. Fix the cause and the stripes usually fade, sometimes in hours, sometimes it takes weeks. Now here's the other story. A female betta that's ready to spawn can show five or six lighter bars running up and down her body and a little white spot just behind her bottom fins, which is the egg spot. That's not stress, that's a healthy female doing what females do. Same stripes, two different stories. So when you see stripes, don't reach for a bottle. Ask what changed in the tank this week. If the answer is nothing, and she's female and plump, you may just be looking at a fish that's ready. Next, the color that changes with your thermostat. Number four, cold water. This is the one I'd bet on if you brought me a dull, sluggish betta and nothing else. Bettas are tropical fish. Most care sources put their ideal at 78 to 80 degrees and say anything below 74 is too cold. Normal room temperature in a lot of houses is simply too cold for them. Here's what happens. A cold betta slows down first. He sits on the bottom, rests more, eats less. His immune system takes a hit. And one source says a betta in water below about 73 degrees can go pale within hours, and the color comes back once the water is warmed up. So you get a fish who looks sick and tired and dull, and the fix is a heater. A small preset heater runs under $17, and one reviewer puts the budget models at about the price of a coffee. The rule of thumb is about 5 watts per gallon. Clive, my betta, lives in a planted 10-gallon on my workbench in a basement in Dayton, Ohio, and in January that basement is no tropical river. He has a heater. So here's what to do this weekend. Put a thermometer in your betta tank and check it at 7 in the morning, not at noon. Morning is when the house is coldest. Next, a betta whose colors change and nobody did a thing. Number three, the marble betta. Some bettas carry what's called the marble gene, and it's one of the strangest things in the hobby. It's a transposon, a stretch of DNA that can move around in the fish's genes. People call it a jumping gene. Over the fish's life, it can switch pigment on in one spot and off in another. So a marble betta you bought white with a few blue patches can turn mostly blue, then grow a red streak, then lose half of it. One source says a marble betta won't keep the same pattern all its life and will likely change color several times. It works on every color layer except the shimmery, iridescent one. I watched customers bring these fish back convinced something had gone wrong, and the fish was perfectly fine. He was just a marble doing marble things. That's a problem the tank doesn't have. If your betta's pattern is shifting, but he's eating, swimming, and building bubble nests, enjoy the show. You got two or three fish for the price of one Next, the fade that nobody can stop. Not me, not you, not the jar. Number two, age. Most bettas live about three to five years. One source says the fading starts from around 18 months, and most bettas lose 10 to 20% of their color. By year three, plenty of them look a couple of shades lighter than the day you brought them home. That's not disease. The cells that make a betta shine thin out as the fish gets older, the same way your hair goes gray. Good food can slow it down a little. It can't turn it back, and this is where a lot of owners spend money they didn't need to. The fish is old, the fish is faded, and the owner thinks he's failing it, so he buys the color food, the vitamins, the conditioner. None of that turns back the clock. If your old betta is eating and swimming, the faded color is proof of something good. That's not a fish going wrong. That's a fish getting old in your care, which was the whole point. Next, the jar. My jar. Number one, color-enhancing food. Here's my confession. I stocked a color-enhancing fish food at my store for years, and the reason it got that shelf space was that the rep gave me a deal on it. I'm not going to pretend it was anything else. Now, to be fair to the jar, There's real science behind it. Fish can't make the pigments for red, orange, and yellow on their own. They get them from what they eat, and color foods carry those pigments, usually one called astaxanthin. Feed it steady and the reds can deepen, but it takes about four to six weeks to show. But here's what the jar can do, and one source says it flat out. Color food will not repair color that faded from stress. That needs the water fixed, not the diet. Cold water, dirty water, a cramped tank, a fish that's just been moved. Food can't touch any of that. The color was never a food problem. It was a report on the tank. So stop fixing a problem the tank doesn't have, and go fix the one it does. If your betta stays dull while he's awake, or the color changes along with anything else, test the water, where ammonia and nitrite should both read zero, and take him to a local fish store or an aquatic vet who can look at him. Keepers who've raised bettas longer than I ran a store may read color differently, and I've listened. But that's what I saw. So let's go back to that tub on a shelf. About eight dollars. Promising color. I sold a lot of those and I'm not going to tell you color food is useless because it isn't. But it was always answering the wrong question. The question was never what to feed him to fix his color. It was what his color is trying to tell me. Pale at night means he's asleep. Pale in the cup means he's been moved. Stripes means something changed, or she's ready. Dull and slow means he's cold. A shifting pattern means he's a marble. A soft fade means he's getting old with you. And dull while he's awake means check the water before you buy one more thing. So here's the weekend. Before you spend a dollar on a pale betta, check three things. The clock. Is it the middle of the night? The thermometer. Is the water at least 78? And a test strip. Our ammonia and nitrite at zero. If all three check out and he's eating, you may be looking at a fish who's fine. And if one of them is off, now you know what to fix. And it isn't in a jar. Stop fixing a problem the tank doesn't have. Tell me in the comments, folks. What color is your betta? And has he changed since the day you brought him home? Feed light, change slow. I'll see you in the fish room.