Connies Pond & Koi

Koi Dealer in Castro Valley, California

4.7(55 reviews)
(510) 733-55562517 San Carlos Ave, Castro Valley, CA 94546View on Yelp
Connies Pond & Koi - koi in Castro Valley, CA

Customer Reviews

4.7
out of 5
55 reviews

Based on Yelp ratings

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About Connies Pond & Koi

Connies Pond & Koi is a Castro Valley staple for Bay Area pond enthusiasts, earning a 4.7-star rating across 55 reviews. Located in the East Bay hills region, the shop bridges the gap between a traditional nursery and a dedicated fish store, which is a rare combination you don't find everywhere. Castro Valley's mild climate makes year-round pond keeping very manageable, and having a local expert nearby matters when your fish need attention fast. Customers regularly praise the knowledgeable, personalized service you get here.

Services

Nurseries & Gardening
Local Fish Stores

Services & Process

Because the business operates as both a nursery and a fish store, customers can source koi and aquatic plants in a single visit. You'll find koi in various grades and sizes, along with pond plants like water lilies and marginals that help balance water quality naturally. Staff can advise on pond setup, filtration choices, and seasonal care specific to Northern California conditions. They also carry pond supplies including pumps, treatments, and feeding essentials so you're not making multiple stops.

Service Area

Connies Pond & Koi primarily serves Castro Valley and the surrounding East Bay communities including San Leandro, Hayward, and Pleasanton. Hobbyists from Oakland and Fremont also make the trip out given the shop's strong reputation and hard-to-find combination of pond plants and quality koi.

Frequently Asked Questions

What sizes and grades of koi does Connies Pond & Koi typically carry?
Stock varies seasonally, but you'll generally find koi ranging from small 4-6 inch juveniles up to larger show-quality fish. Grades range from pond-quality to higher-end select fish, so there's usually something for every budget and experience level.
Can I buy pond plants and koi at the same time?
Yes, that's one of the real advantages of this shop. You can pick up aquatic plants like water lilies alongside your fish, which saves a separate trip to a garden center and lets staff help you choose plants that work well with your specific koi.
Do they offer advice on pond filtration for East Bay water conditions?
Staff are familiar with local water chemistry and can point you toward filtration setups suited to Northern California conditions. It's worth asking about seasonal adjustments since Bay Area water quality can shift between summer and rainy season.
Is Castro Valley a good place to keep koi year-round?
The East Bay's mild climate is actually quite favorable for koi. Temperatures rarely get extreme enough to stress healthy fish, though you'll want a net or cover during the brief cold snaps in winter to protect younger or smaller koi.
Can Connies help me if one of my koi looks sick?
Bringing a water sample or a clear description of symptoms is the best way to start that conversation in-store. Staff can often identify common issues like parasites, bacterial infections, or water quality problems and recommend appropriate treatments.
Do I need an appointment to visit and purchase fish?
Generally you can walk in during business hours, but calling ahead at (510) 733-5556 is smart if you're looking for specific fish or want to ensure staff have time to work through your questions. Busy weekends can mean shorter conversations at the counter.

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