My guppy just had fry during the last 24 hours, and now has what looks like blood spots on both sides of her body. She's not sluggish, she's eating, but I'd like to find out if anyone has ideas on what this is and how I can correct it. She is in a 10-gallon tank with one male, and about 20 fry. The tank has been set up for about a month, and I just did a 50% water change two days ago. There are plants (java fern, anubias and red rubin). The only chemical used was Stress Coat to remove chlorine when I did the water change, and I also add a small amount of aquarium salt.