Super Cichlids Freeze-dried Blackworm Fish Food, 75g, with astaxanthin

Press a cube of this freeze-dried blackworm fish food against the aquarium glass and the fish work at it until the worms are gone. Super Cichlids packs whole freeze-dried blackworms into cube form and adds astaxanthin, a carotenoid, which the label declares alongside the worms. The bag holds 75g and is one of three resealable sizes, with 15g and 25g bags also offered.

Whole worms, pressed into cubes

The cubes are made from whole blackworms raised in spring water and dried intact, so the worms are neither chopped nor pressed into a paste. Each cube also carries astaxanthin, the carotenoid named on the pack.

Super Cichlids calls the cubes a high-protein aquarium fish treat and a breeding conditioning food, and the worms behind them are raised on specialized diets.

What the 75g bag contains

• A 75g resealable bag of freeze-dried blackworm cubes.
• A food-grade oxygen absorber, which is included to extend shelf life and is not for consumption.

Sticking a cube on the glass or sinking it

Press one cube against the inside of the aquarium glass; fish pick at it until the worms are finished. The manufacturer also lists rehydrating the cube so that it sinks, which puts the food within reach of mid-water and bottom feeders.

Evening feedings are the recommended time. Store the bag in a cool, dry place, out of direct sunlight.

Which fish does this food suit?

Which fish can eat the cubes?

The manufacturer names mid-water and bottom feeders such as discus, angelfish, bettas and corydoras. Among community tropical fish, guppies, tetras, rasboras, barbs, gouramis, killifish and bettas are listed for it. Reef fish, axolotl, goldfish, koi, angelfish, oscar and discus all appear on the cichlid and marine list.

Can the cubes be used in a nano tank or a fry grow-out?

Super Cichlids lists the cubes for fry grow-out feeding, quarantine tanks, shrimp tanks and nano tanks. The same cubes also serve as a treat in a breeding conditioning routine.

What size bag should I choose?

This listing is the 75g bag. The same cubes also come in 15g and 25g resealable bags, so a smaller bag is an option for a nano tank or a single small group of fish.

Checks before you buy

Will the cubes reach my bottom feeders?

Bottom feeders such as corydoras need the cube rehydrated so it sinks; pressed on the glass it stays at the surface where mid-water fish feed on it.

Is the oxygen absorber safe to leave in the bag?

The absorber is food-grade but is not for consumption, so it stays in the bag with the cubes and out of the aquarium.

Do I need to keep the bag in the fridge?

No refrigeration is listed. Keep it in a cool, dry area out of direct sunlight, per the manufacturer's storage direction.