Threadfin Geophagus by LiveAquaria
Many cichlid enthusiasts consider the Threadfin Geophagus as the crown jewel of the Cichlidae family. Though territorial like other cichlids, the Threadfin Geophagus is relatively peaceful in larger aquariums with plenty of hiding locations. As this beautiful fish matures, it develops elongated spines on the dorsal fin that have a thread-like appearance. Combined with its beautiful silver body with shades of green and blue, the Threadfin Geophagus is an elegant addition to community cichlid aquariums.
Native to the Amazon region of Brazil, the Threadfin Geophagus does best in roomy, 40 gallon or larger aquariums that offer plenty of shelter amongst rocks and plants. Like other cichlids, this fish is known for its disruptive digging. Therefore, care needs to be taken with the placement of substrate and decorations.
| Specifications |
|---|
| Species: Threadfin Geophagus |
| Origin: Amazon region, Brazil |
| Adult Size: 4 to 5 inches |
| Water Temperature: 75–82°F |
| Water pH: 6.0–7.5 |
| Water Hardness: Soft to medium |
| Compatibility: Best with larger community tanks; avoid small or aggressive fish |
FAQ
What is the ideal tank size for a Threadfin Geophagus?
A 40-gallon or larger aquarium is recommended to provide enough space and hiding spots for this fish.
Is the Threadfin Geophagus aggressive?
It can be territorial, especially during breeding or when space is limited. In larger tanks with ample hiding places, it tends to be relatively peaceful.
Does the Threadfin Geophagus dig in the substrate?
Yes, like other cichlids, it is known for disruptive digging behavior, so a secure substrate and stable decorations are necessary.
Dominic Scott –
Added a Threadfin Geophagus to my 55-gallon tank last month. It’s been very calm since we added plenty of rocks and plants. The fish has a stunning silver body with green and blue tones. The spines on its dorsal fin are clearly visible as it matures. Only issue is it digs occasionally, so I’ve used a fine-grained sand substrate to minimize damage.
Victor Peake –
This fish looks beautiful and fits well in a community tank. I was worried about aggression, but with proper hiding spots, it’s peaceful. The coloration is vibrant and it’s active during the day. Just make sure the tank is large enough and has plenty of cover.
Deirdre Wilson –
I’ve had this fish for three months now. It’s become quite a centerpiece in my aquarium. The thread-like spines on its back are a unique feature. It doesn’t show aggression toward other fish, even when sharing space with other cichlids. Only needed to adjust the substrate after a few weeks due to digging.