# Bristlenose Catfishes (*ancistrus*)

Bristlenose Catfishes are small, friendly fish that love to munch on algae in their tanks. They have unique bristle-like growths on their noses that make them look very special!

- **Category:** [Fish](https://www.snappit.app/explore/categories/fish)
- **Rarity:** Common
- **Danger:** 0/5 · No known danger
- **Habitat:** Freshwater rivers and lakes
- **Also known as:** Bristle Nose, Bristlenose Pleco, Bushy Nose Catfish

![Bristlenose Catfishes](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Bristlenose_Catfish_700.jpg&width=800)

Photo: CC BY-SA 3.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Bristlenose_Catfish_700.jpg)

## Appearance

The Bristlenose Catfishes has a flattened body, often dark brown or grey, covered in bony plates. Its most distinctive feature is the prominent, branching 'bristles' on its snout, especially on males, which makes it look unique among catfish.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Platyhelminthes
- **Class:** Actinopterygii
- **Order:** Siluriformes
- **Family:** Loricariidae
- **Genus:** Ancistrus

## Interesting facts

- Baby bristlenoses are called 'fry' and are tiny!
- Males guard their eggs fiercely until they hatch!
- Some can live over 10 years in a well-kept aquarium!
- They are masters of camouflage, blending perfectly with riverbeds!

## Special abilities

- **Sucker Mouth Grip:** Bristlenose Catfishes can cling to surfaces with their specialized suckermouth because of strong suction, that helps them stay put in fast currents.
- **Algae Scraper:** Bristlenose Catfishes can scrape algae from rocks using specialized teeth, because of their unique mouth shape that helps them find food.
- **Snout Bristles:** Bristlenose Catfishes has elaborate bristles on their snout that help them attract mates and defend territories.

## Measurements & details

- **Length:** 8-15 cm
- **Weight:** 0.05-0.15 kg
- **Lifespan:** 5-10 years
- **Swim Speed:** 0.7 km/h
- **Maximum Depth:** 5 m
- **Water Type:** Freshwater

## Diet & Feeding

These bottom-dwellers primarily graze on algae and plant matter found on submerged surfaces.

- **Primary Foods:** algae, detritus, biofilm, plant matter, vegetables (in captivity)
- **Foraging Method:** Grazing

## Ecological connections

- **Eaten by:** Black Piranha (*Serrasalmus rhombeus*) — Larger predatory fish that hunt small bottom-dwellers.
- **Eaten by:** Giant River Otter (*Pteronura brasiliensis*) — Apex predators of South American rivers that eat fish.
- **Eaten by:** [Silver Arowana](https://www.snappit.app/explore/silver-arowana) (*Osteoglossum bicirrhosum*) — Predatory fish that can consume smaller bottom-dwelling fish.

## Traits

- [Social](https://www.snappit.app/explore/traits/social): Social animals live in organized groups, cooperating for survival benefits such as foraging, defense, and raising offspring.
- [Colorful](https://www.snappit.app/explore/traits/colorful): Colorful describes organisms or objects displaying a wide range of bright and distinct colors.
- [Herbivorous](https://www.snappit.app/explore/traits/herbivorous): This trait characterizes organisms whose diet consists entirely or primarily of plant material.
- [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands.
- [Nocturnal](https://www.snappit.app/explore/traits/nocturnal): Nocturnal animals are primarily active during the nighttime hours, typically resting or sleeping during the day.

## Collections

- [Fish](https://www.snappit.app/explore/collections/fish)

## Safety

**Danger:** 0/5 · No known danger

No special safety notes yet.

## Frequently Asked Questions

### How to identify Bristlenose Catfishes?

Look at body shape, where the fins sit and their outline, mouth position, stripes and spots. Young fish and breeding adults can wear different patterns, and aquarium color varieties can look nothing like wild fish. Fish Identifier: upload a photo and compare the visible details.

### How long is Bristlenose Catfishes?

8-15 cm

### How much does Bristlenose Catfishes weigh?

0.05-0.15 kg

### How long does Bristlenose Catfishes live?

5-10 years

### What does Bristlenose Catfishes eat?

These bottom-dwellers primarily graze on algae and plant matter found on submerged surfaces.

### How fast can Bristlenose Catfishes swim?

0.7 km/h

### Where is Bristlenose Catfishes usually found?

Freshwater rivers and lakes

### How does Bristlenose Catfishes hunt?

Grazing

## Where to spot

- [Mitchell Nutter Park](https://www.snappit.app/guides/places/mitchell-nutter-park) — Florida, US · Park

## More Fish

- [Rainbow Trout](https://www.snappit.app/explore/rainbow-trout) (*Oncorhynchus mykiss*)
- [Brown Trout](https://www.snappit.app/explore/brown-trout) (*Salmo trutta*)
- [Brook Trout](https://www.snappit.app/explore/brook-trout) (*Salvelinus fontinalis*)
- [Lake Trout](https://www.snappit.app/explore/lake-trout) (*Salvelinus namaycush*)

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Source: [Bristlenose Catfishes: Facts & Places to See — Snappit](https://www.snappit.app/explore/bristlenose-catfishes)