Parnahyba whiptail
Loricaria parnahybae
Also known as Parnaiba whiptail catfish
Care at a glance
- Temperature
- 73–82°F (23–28°C)
- pH
- 6.0–7.5
- Adult size
- 9.8 in (25 cm)
- Minimum tank
- 53 gal (200 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- Medium
- Rarity
- Rare
- Origin
- Parnaiba River basin, northeastern Brazil
- Family
- Loricariidae
Overview
The parnahyba whiptail is a long, flattened catfish that spends its life lying on open sand, so a deep bed of soft fine sand is the single most important thing you can give it. It is a social, peaceful fish that does best with a few of its own kind rather than alone, and it will not trouble other tankmates. Choose small, calm companions that feed in the upper water so the whiptail is not out-competed at the floor. Feed sinking pellets and wafers along with frozen bloodworm and daphnia, making sure food reaches the bottom. Allow a tank of around 200 liters with plenty of open sand and some driftwood for shade.
In the wild
Loricaria parnahybae comes from the Parnaiba river system of northeastern Brazil, where it rests on and buries into open sand banks. The tank should echo that with a wide, uncluttered area of fine sand deep enough to sift, edged with driftwood and a few shady spots. Keep the water in a broad, tolerant range, roughly 23 to 28 C and about pH 6.0 to 7.5, kept clean and gently moving. Fine sand is not optional, since sharp gravel damages the belly and barbels.
Good to know
Loricaria parnahybae belongs to the whiptail branch of the family Loricariidae. The body reaches about 16 centimeters, and the trailing tail filament brings the total length to roughly 25 centimeters. Breeding is of moderate difficulty and follows the striking loricariine pattern: after spawning the male gathers the eggs and carries the clutch on his enlarged lower lip and barbels, brooding them for around two weeks while still burying into the sand.
Did you know
Male whiptails of this group are lip brooders. The father carries the egg mass held against his mouth and barbels for about two weeks, and cannot feed normally the whole time he is minding the next generation.
Tank mates
Parnahyba whiptail is a peaceful, social species that keeps to the bottom. These picks match on water type, temperature, pH, size and temperament.

Jeweled baril
Opsarius pulchellusFreshwater5.1 in (13 cm)53 gal (200 L)72–81°F (22–27°C)
Clown barb
Barbodes dunckeriFreshwater5.1 in (13 cm)53 gal (200 L)75–82°F (24–28°C)Green turushuki catfish
Hemidoras morrisiFreshwater6.3 in (16 cm)53 gal (200 L)73–82°F (23–28°C)
Burmese border loach
Botia histrionicaFreshwater5.1 in (13 cm)53 gal (200 L)72–82°F (22–28°C)
One-spot synodontis
Synodontis notatusFreshwater9.8 in (25 cm)53 gal (200 L)72–81°F (22–27°C)
Goldie River rainbowfish
Melanotaenia goldieiFreshwater5.1 in (13 cm)53 gal (200 L)75–86°F (24–30°C)
Common questions
What size tank does a Parnahyba whiptail need?
A Parnahyba whiptail needs at least 53 gal (200 L). It spends most of its time in the bottom.
What temperature and pH do Parnahyba whiptail need?
Parnahyba whiptail are comfortable at 73–82°F (23–28°C) with a pH of 6.0–7.5.
How big do Parnahyba whiptail get?
An adult Parnahyba whiptail reaches about 9.8 in (25 cm).
Where to buy
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Related species

Marble whiptail
Loricaria simillimaFreshwater10.2 in (26 cm)66 gal (250 L)75–82°F (24–28°C)
Papa panaque
Panaque bathyphilusFreshwater9.8 in (25 cm)79 gal (300 L)77–84°F (25–29°C)Brown pleco
Hypostomus plecostomoidesFreshwater10.2 in (26 cm)79 gal (300 L)77–84°F (25–29°C)
Basilisk pleco
Hypostomus basiliskoFreshwater9.4 in (24 cm)79 gal (300 L)77–84°F (25–29°C)Llanero whiptail
Lamontichthys llaneroFreshwater9.1 in (23 cm)79 gal (300 L)75–82°F (24–28°C)
Three beacon pleco
Leporacanthicus triactisFreshwater11 in (28 cm)106 gal (400 L)79–86°F (26–30°C)