Keeper guide

Blue Fang Skeleton Feeding Guide — Ephebopus cyanognathus

Feed Blue Fang Skeletons according to size, appetite and condition rather than a fixed weekly schedule. Ephebopus cyanognathus is a fast-growing fossorial species, so small juveniles often eat more regularly than adults.

At a glance

Quick facts

World
New World
Origin
French Guiana
Lifestyle
Fossorial
UK hobby rarity
Uncommon
Maximum size
About 12–14 cm (4.75–5.5 in)
Growth rate
Fast
Male lifespan
Roughly 3–4 years
Female lifespan
Often 10–12 years
Temperament
Fast, secretive and defensive when exposed
Venom
Venomous; not usually treated as medically significant, but bites should be avoided; this genus has urticating setae on the pedipalps
Temperature
22–26°C
Moisture / humidity
Moisture-retentive lower substrate with good airflow and a water dish
CITES
Check current CITES rules before cross-border trade

How often should you feed?

There is no single feeding interval that suits every Ephebopus cyanognathus. A small sling may take modest meals quite regularly, while a large adult can go much longer between feeds.

If a Blue Fang Skeleton has eaten recently and the abdomen already looks well filled, wait before offering more. One refused meal is rarely important on its own.

Choosing prey

Offer Ephebopus cyanognathus established feeder insects that the spider can overpower without a long struggle. Crickets, locusts and roaches are all commonly used where they are legal and appropriately sized.

For very small Blue Fang Skeletons, use smaller prey or a suitable pre-killed feeder if that makes feeding safer. Increase prey size gradually as the spider grows.

Slings and juveniles

Young Blue Fang Skeletons generally moult more often than adults, so they usually eat smaller meals more frequently. Keep portions sensible and remove leftovers from the Ephebopus cyanognathus enclosure.

A juvenile Blue Fang Skeleton may stop eating before a moult. If the spider is hiding more, closing its retreat or ignoring prey it would normally take, remove the feeder and give it time.

Adults

Adult Ephebopus cyanognathus do not need to be kept permanently full of food. As the spider approaches an adult size of about 12–14 cm (4.75–5.5 in), feeding can usually be spaced farther apart than during rapid juvenile growth.

Use the abdomen as a rough guide for Blue Fang Skeletons. If it is already very large, another heavy meal is unnecessary.

Food refusal and premoult

Food refusal in Ephebopus cyanognathus can happen for normal reasons including premoult, recent rehousing, maturity or a period of lower appetite. Check water, temperature and the enclosure before assuming there is a problem.

If premoult looks likely in a Blue Fang Skeleton, remove live prey and keep fresh water available. Do not keep offering new feeders every day.

Feeding after a moult

After Ephebopus cyanognathus moults, wait until the new exoskeleton has hardened and the fangs have darkened before feeding again. Small slings recover faster than large adults.

When a Blue Fang Skeleton is ready to eat again, offer a modest first meal rather than several feeders at once.

Water, leftovers and safe feeding

Keep fresh water available to Ephebopus cyanognathus even when the spider is feeding well. Remove discarded prey remains before they sit in damp substrate and begin to spoil.

There is no need to hand-feed Blue Fang Skeletons. Place prey into the enclosure from a sensible distance, use tongs for removing leftovers when needed and keep your hands out of the spider's path.